CN104333568A - Cloud system for household electronic commerce based on CDN (Content Delivery Network) and load balancing technology as well as implementation method - Google Patents
Cloud system for household electronic commerce based on CDN (Content Delivery Network) and load balancing technology as well as implementation method Download PDFInfo
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Abstract
The invention discloses a cloud system for household electronic commerce based on a CDN (Content Delivery Network) and a load balancing technology as well as an implementation method. The cloud system comprises a user App module, a load balancing module and a CDN node module, wherein the load balancing module comprises a GSLB (Global Server Load Balance) module and an LSLB (Local Server Load Balance) module, the CDN node module comprises a plurality of Cache node servers, the CDN node module, which is closest to the user App module, is selected through the load balancing module, and data exchange is carried out between the user App module and the closest CDN node module. The cloud system for household electronic commerce based on the CDN and the load balancing technology as well as the implementation method have the advantages of flexible system expandability and capabilities of effectively improving the utilization efficiency and the response speed of a background server and other resources, remarkably improving the efficiency for solving the IO (Input Output) bottleneck of a front network, helping to shorten the system response time during high concurrency of users and solving the network congestion problem.
Description
Technical field
The present invention relates to e-commerce system field, particularly relate to a kind of household based on CDN and load-balancing technique electricity business's cloud system and implementation method.
Background technology
Current household building materials industry Electronic Business slower development, mainly because household building materials belong to traditional industries, the level of IT application of industry itself is lower, the open furniture building materials brand manufacturer of some theories build voluntarily or the electric quotient system of outsourcing development unified as be all based on traditional unit or dual systems, there is obvious performance bottleneck, in some family activity peak periods, along with the increase of traffic carrying capacity, when user concurrent access amount increases instantaneously, the response speed of system can obviously reduce, user's experience starts to be deteriorated, during this system architecture upgrading, there is obvious deficiency: one is that escalation process is loaded down with trivial details, machine switching can make service brief interruption, and cause the waste of original computational resource, if face the lifting of traffic carrying capacity next time again, this will cause again the great number cost of HardwareUpgring to drop into again, the equipment that even performance is remarkable again can not meet the demand of current traffic, total system cannot elasticity dilatation as required, be difficult to the Operational requirements meeting household trade company, two is that the cost spent is larger more toward high-end server, three is these servers is single failure point (Single Point of Failure), once this server or application software lost efficacy, can cause the interruption of whole service.
Therefore, wish a kind of large-scale household electricity business cloud plateform system, front-end client smooth access back end electricity business plateform system can be realized, evade cpu performance bottleneck and the network I/O performance bottleneck of host computer system, backstage is based on cloud platform construction host resource pond, can according to the growth pattern of user, realize distribution according to need host resource, host resource scheduling can according to the cpu performance load of reality, the performance index such as link IO response time carry out flexible resource distribution, solve the single-point cpu performance bottleneck of backstage electricity quotient system system and the network I/O performance bottleneck problem of many concurrent users, the network service that client access electricity business plateform system provides can as access high-performance, the server of High Availabitity is the same, the impact of the not powered business's plateform system of CLIENT PROGRAM, do not need to change, the retractility of electricity business plateform system reaches by adding pellucidly in cloud host resource pond and deleting a node, by detection node or service processes fault and correctly reset system reach high availability, thus improve the Consumer's Experience of system.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of household based on CDN and load-balancing technique electricity business's cloud system and implementation method, there is the advantages such as reliability is high, distribution according to need scheduling, elastic telescopic, flexibly dilatation, simultaneously e-commerce system application and popularize and have market prospects widely.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:
A kind of large-scale household electricity business cloud plateform system based on CDN and load-balancing technique is provided, it is drawn together: user App module, load balancing module and CDN node module, described load balancing module comprises GSLB module and LSLB module, described CDN node module comprises some Cache node servers, select the described CDN node module nearest with described user App module by described load balancing module, described user App module and nearest described CDN node module carry out exchanges data.
In a preferred embodiment of the present invention, also comprise electric business's cloud platform primal system module, electric business's cloud platform primal system module receives and preserves the WEB information of whole system.
In a preferred embodiment of the present invention, electric business's system management module, described electric business's system management module manages the resource pool of whole system, content, scheduling of resource and network monitoring behavior.
In a preferred embodiment of the present invention, electric quotient system system Networked Control and Management module, the network operation of described electric quotient system system Networked Control and Management module to whole system is monitored.
In a preferred embodiment of the present invention, described resource pool comprises computational resource pond, memory resource pool and cloud platform management server cluster.
In a preferred embodiment of the present invention, the implementation method of system for content distribution comprises:
(1) user opens by mobile terminal App module or user to want website domain name by input in the web browser of foreground; (2) user's request is directed directly at GSLB module; (3) GSLB module is shaken hands by TCP/IP and is obtained the IP of client; (4) if whether the network segment searched in static path table belonging to this IP exists, then (8) step is performed; If there is no, then (5) step is performed; (5) if whether the network segment searched in dynamic route table belonging to this IP exists, then (8) step is performed; If there is no, then (6) step is performed; (6) GSLB module repeating query test LSLB module is from the distance of user and time delay, and GSLB module accepts and judges the information of test, to determine optimum website; (7) network segment adding this place, IP address, to dynamic routing table recently, directly connects with the LSLB module device of optimum Distribution Layer node for subsequent user; (8) this client is directed to the highest LSLB module of priority set in static path table by transparent redirection order; (9) based on user's close, according to the load balancing of GSLB module, user is redirected to optimal L SLB Module nodes; (10) LSLB module carries out the detection of health status poll to the health/load of Cache node server; (11) to the request of access to content, local load balancing process is carried out to user, load balancing module, according to the health/load of Cache node server, Cache node server distribution of content situation, to select in CDN node module optimal Cache node server to provide service for user; (12) judge select Cache node server in whether exist user request content, if user request content exist, then perform (16) step; If the content of user's request does not exist, then perform (13) step; (13) when the content of user's request does not exist, the passive and synchronous operation of local load balancing module triggering system; (14) ask GSLB module polls overall situation contents directory, the link information of this content is returned to Cache node server by GSLB module; (15) Cache node server is by Link redirect mode for user provides service, and user is pointed to original contents server and obtain content, this flow process terminates; (16) when the content of user's request exists, user is redirected to Cache node server and is provided service by load balancing module; (17) user asks Cache node server to provide service; (18) user is final connects with optimum Cache node server, and this flow process terminates.
In a preferred embodiment of the present invention, the concrete steps of described passive and synchronous operation comprise: (1) user initiates content requests to Cache node server; (2) Cache node server judges the whether local hit of this content, if hit, then jumps to (3) step; If miss, then jump to (4) step; (3) when this content is hit in this locality, then provide service directly to user, this flow process terminates; (4) when this content miss, then source information is obtained to LSLB module request; (5) LSLB module searches information according to user's requirements for access from local content directory; (6) LSLB module judges whether the solicited message that can obtain this content, if passable, then jumps to (7) step; If cannot, then jump to (8) step; (7) LSLB module gets source information in this CDN node module, and user's link transferred on other Cache node servers, provide service to user, this flow process terminates; (8) LSLB module request GSLB module obtaining information; (9) GSLB module searches information from overall contents directory according to demand, and returns to LSLB module; (10) LSLB module is according to strategy, judges that this content is the need of PULL to Cache node server, if needed, then jumps to (11); If do not needed, then flow process terminates; (11) LSLB module is to the source information of Cache node server returned content; (12) when needed, then (14) step is jumped to; When not needed, (13) step is jumped to; (13) Cache node server provides service by the mode of Link redirect to user, and this flow process terminates; (14) Cache node server from source server by content PULL to this locality; (15) judged whether that PULL operates, if do not completed, then circulate this step; After completing, perform (16) step; (16) Cache node server request LSLB module upgrades local content directory; (17) Cache node server sends content update request to electric business's system management module; (18) electric business's system management module upgrades overall contents directory.
In a preferred embodiment of the present invention, the implementation method of this system comprises: (1) electric business's system management module request GSLB module completes contents distribution, carries content distribution policy information, comprises content identification, load balancing module address, priority; (2) GSLB module notice LSLB module starts choice Cache node server flow process; (3) LSLB module carries out the detection of health status poll to the health/load of Cache node server; (4) LSLB module is according to the health/load of Cache node server, Cache node server distribution of content situation, selects optimal Cache servers in CDN node; (5) LSLB module notice Cache node server obtains content; (6) Cache node server obtains content from original server; (7) Cache node server obtains successfully to LSLB module returned content; (8) Cache node server LSLB module upgrades local content directory, and obtains successfully to GSLB module returned content; (9) GSLB module upgrades the distribution situation of this content in contents directory; (10) GSLB module notifies electric business's system management module contents Distribution Results.
The invention has the beneficial effects as follows: possess set expandability flexibly, effectively can improve utilization ratio and the response speed of background server and other resources, also obvious lifting is had for solution leading portion network I/O bottleneck, system response time when contributing to shortening high concurrent user, solve network congestion problem.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, wherein:
Fig. 1 is the structural representation of the large-scale household electricity business cloud plateform system based on CDN and load-balancing technique of the present invention;
Fig. 2 is the structural representation of described electric business's cloud platform primal system module of the present invention;
Fig. 3 is the implementation method flow chart of the large-scale household electricity business cloud plateform system based on CDN and load-balancing technique of the present invention;
Fig. 4 is the flow chart of described passive and synchronous operation of the present invention;
Fig. 5 is of the present invention based in the large-scale household electricity business cloud plateform system of CDN and load-balancing technique
Hold the implementation method flow chart of distribution.
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-5, the embodiment of the present invention comprises:
A kind of large-scale household electricity business cloud plateform system based on CDN and load-balancing technique, it is drawn together: user App module, load balancing module and CDN node module, described load balancing module comprises GSLB(Global Server Load Balance) module and LSLB(Local Server Load Balance) module, described CDN node module comprises some Cache node servers, the described CDN node module nearest with described user App module is selected by described load balancing module, described user App module and nearest described CDN node module carry out exchanges data.
User App module, operates in various apple intelligent mobile phone terminal and Android smartphone terminal inner, and App client software, as the entrance of the O2O ecommerce cloud plateform system towards household building material industry, guides user's access system.
SiteServer LBS, its function is that the loading condition of distance (close) according to user and Cache node realizes route.
GSLB module is used for realizing overall load balancing, execution close judges, realize the access to content nearby of user, by direct traffic on the Cache node server from the nearest normal work of user, and in time flow is transferred when their operation irregularity, GSLB module controller can obtain operating state and the performance of the Cache node server being distributed in various places directly or indirectly, and the source of user can be judged, to ensure that user can be effectively assigned to from its " in logic " healthy, the most available recently node.
LSLB module, main purpose realizes Cache sensor selection problem, selects optimal Cache node server to provide service for user in one group of Cache node server resource pool.
CDN node module is set and network monitor agent's module of the multiple Cache node servers being positioned at a physical location, mainly for construction and the deployment of CDN.
Cache node server, the edge service equipment of CDN, towards the content providing of end user, service is provided directly to user, CDN node places Cache node server and local load balancing server (LSLB) usually as required, the copy of corresponding contents on the in store original server of Cache node server, the request of the fastest response user can be ensured, in addition, when Cache node server increasing number, local load balancing server is just needed to realize the distribution of flow between intra-node multiple Cache node server, coordinate with LSLB, electric business's platform service of being close to the users is provided, Cache node server is distributed in the area or network that user accesses Relatively centralized, and utilize GSLB technology (GSLB) access of user to be pointed to from the nearest Cache node server working properly of user, the request of user is directly responded by it, if there is no the content that user will access in Cache node server, it can go capture the corresponding page and be supplied to user to former server according to configuration automatically.
Based on user App module, the implementation method of this system comprises: (1) user opens App module by mobile terminal or user wants the domain name of website by input in the web browser of foreground; (2) user's request is directed directly at GSLB module; (3) GSLB module is shaken hands by TCP/IP and is obtained the IP of client; (4) if whether the network segment searched in static path table belonging to this IP exists, then (8) step is performed; If there is no, then (5) step is performed; (5) if whether the network segment searched in dynamic route table belonging to this IP exists, then (8) step is performed; If there is no, then (6) step is performed; (6) GSLB module repeating query test LSLB module is from the distance of user and time delay, and GSLB module accepts and judges the information of test, to determine optimum website; (7) network segment adding this place, IP address, to dynamic routing table recently, directly connects with the LSLB module device of optimum Distribution Layer node for subsequent user; (8) this client is directed to the highest LSLB module of priority set in static path table by transparent redirection order; (9) based on user's close, according to the load balancing of GSLB module, user is redirected to optimal L SLB Module nodes; (10) LSLB module carries out the detection of health status poll to the health/load of Cache node server; (11) to the request of access to content, local load balancing process is carried out to user, load balancing module, according to the health/load of Cache node server, Cache node server distribution of content situation, to select in CDN node module optimal Cache node server to provide service for user; (12) judge select Cache node server in whether exist user request content, if user request content exist, then perform (16) step; If the content of user's request does not exist, then perform (13) step; (13) when the content of user's request does not exist, the passive and synchronous operation of local load balancing module triggering system; (14) ask GSLB module polls overall situation contents directory, the link information of this content is returned to Cache node server by GSLB module; (15) Cache node server is by Link redirect mode for user provides service, and user is pointed to original contents server and obtain content, this flow process terminates; (16) when the content of user's request exists, user is redirected to Cache node server and is provided service by load balancing module; (17) user asks Cache node server to provide service; (18) user is final connects with optimum Cache node server.
Based on user App module, under the prerequisite of the implementation method of this system, the concrete steps of described passive and synchronous operation comprise: (1) user initiates content requests to Cache node server; (2) Cache node server judges the whether local hit of this content, if hit, then jumps to (3) step; If miss, then jump to (4) step; (3) when this content is hit in this locality, then provide service directly to user, this flow process terminates; (4) when this content miss, then source information is obtained to LSLB module request; (5) LSLB module searches information according to user's requirements for access from local content directory; (6) LSLB module judges whether the solicited message that can obtain this content, if passable, then jumps to (7) step; If cannot, then jump to (8) step; (7) LSLB module gets source information in this CDN node module, and user's link transferred on other Cache node servers, provide service to user, this flow process terminates; (8) LSLB module request GSLB module obtaining information; (9) GSLB module searches information from overall contents directory according to demand, and returns to LSLB module; (10) LSLB module is according to strategy, judges that this content is the need of PULL to Cache node server, if needed, then jumps to (11); If do not needed, then flow process terminates; (11) LSLB module is to the source information of Cache node server returned content; (12) when needed, then (14) step is jumped to; When not needed, (13) step is jumped to; (13) Cache node server provides service by the mode of Link redirect to user, and this flow process terminates; (14) Cache node server from source server by content PULL to this locality; (15) judged whether that PULL operates, if do not completed, then circulate this step; After completing, perform (16) step; (16) Cache node server request LSLB module upgrades local content directory; (17) Cache node server sends content update request to electric business's system management module; (18) electric business's system management module upgrades overall contents directory.
Also comprise electric business's cloud platform primal system module, electric business's system management module and electric quotient system system Networked Control and Management module, electricity business cloud platform primal system module receives and preserves the WEB information of whole system, described electric business's system management module manages the resource pool of whole system, content, scheduling of resource and network monitoring behavior, and the network operation of described electric quotient system system Networked Control and Management module to whole system is monitored.
Electricity business cloud platform primal system module, be used for depositing the WEB content that content carries electrical supplier website, operate on multiple stage physical server and memory device based on cloud platform software, carry multiple cloud main frame to run, by electric business's system cloud administration module, realize computational resource pond, the real-time distribution of memory resource pool, rapid deployment, elasticity stretches online, dilatation as required.
Electricity business system administration module, adopts distributed parallel system framework, operates in above multiple cloud main frame, as the service terminal software of the O2O ecommerce cloud plateform system towards household building material industry.
Electricity business system cloud management platform, the management of the whole large-scale electric business's cloud system of primary responsibility, comprises resource pool management, as computational resource pond, the real-time distribution of memory resource pool, rapid deployment, elasticity are stretched online, dilatation as required; Content Management, as the injection of content and issue, the distribution of content, the examination & verification of content, the service etc. of content; Resource scheduling management, mainly play a part cloud host resource scheduling on demand, according to user concurrent access performance requirement, according to cpu load rate, internal memory load factor, the IO load factor of cloud main frame in the resource pool of backstage, according to the destination host of the load balancing flexible allocation user access preset; Network centralized monitor manages, and realize distribution and detect, concentrate alarm, the Timeliness coverage fault when the operating state of the Cache node server to each node is monitored, to ensure the normal operation of whole CDN.
The basic use scenes of of cloud computing is that the physical server of multiple stage same architecture is formed a resource pool, and carries out virtual to these physical servers, thus forms more virtual machine.
Resource pool specifically comprises computational resource pond, memory resource pool, cloud platform management server cluster, and inside, cloud platform resource pond exists three independently network planes, computing network plane, storage networking plane and supervising the network plane;
Wherein, computational resource pond, on multiple stage physical server and memory device, by cloud platform software, carries multiple cloud main frame and runs;
Wherein, memory resource pool, integrating traditional memory device space, meets the supporting operating system space of cloud main frame and user storage space demand;
Wherein, cloud platform management node cluster, realizes computational resource pond, the real-time distribution of memory resource pool, rapid deployment, resilient expansion, as required dilatation.
Wherein, cloud management platform, the management of the whole large-scale electric business's cloud system of primary responsibility, comprises resource pool management, as computational resource pond, the real-time distribution of memory resource pool, rapid deployment, elasticity are stretched online, dilatation as required.
Based on user App module, under the prerequisite of the implementation method of this system, electric business's cloud platform primal system module, electric business's system management module and electric quotient system system Networked Control and Management module, the implementation method of this system for content distribution comprises: (1) electric business's system management module request GSLB module completes contents distribution, carry content distribution policy information, comprise content identification, load balancing module address, priority; (2) GSLB module notice LSLB module starts choice Cache node server flow process; (3) LSLB module carries out the detection of health status poll to the health/load of Cache node server; (4) LSLB module is according to the health/load of Cache node server, Cache node server distribution of content situation, selects optimal Cache servers in CDN node; (5) LSLB module notice Cache node server obtains content; (6) Cache node server obtains content from original server; (7) Cache node server obtains successfully to LSLB module returned content; (8) Cache node server LSLB module upgrades local content directory, and obtains successfully to GSLB module returned content; (9) GSLB module upgrades the distribution situation of this content in contents directory; (10) GSLB module notifies electric business's system management module contents Distribution Results.
The present invention can realize front-end client smooth access back end electricity business plateform system nearby, realize geographical position independence, avoid the Single Point of Faliure of server key position, solve system concurrency number of users increase fast after system access performance bottleneck problem, promote the Consumer's Experience of user's access system, backstage is based on cloud platform construction host resource pond, can according to the growth pattern of user, realize distribution according to need host resource, host resource scheduling can according to the cpu performance load of reality, the performance index such as link IO response time carry out flexible resource distribution, solve the cpu performance bottleneck of backstage electricity quotient system system and the network I/O performance bottleneck problem of many concurrent users, the network service that client access electricity business plateform system provides can as access high-performance, the server of High Availabitity is the same, the impact of the not powered business's plateform system of CLIENT PROGRAM, do not need to change, when system upgrade dilatation, great number cost when avoiding system hardware to upgrade drops into the demand that just can meet current traffic, electricity business's platform backstage realizes calculating by cloud computing platform, the automatic deployment of storage and Internet resources, distribution according to need scheduling, elastic telescopic, flexible dilatation, the function of energy-saving and emission-reduction, possesses set expandability flexibly, the retractility of electricity business plateform system reaches by adding pellucidly in cloud host resource pond and deleting a node, by detection node or service processes fault and correctly reset system reach high availability, thus improve the Consumer's Experience of system.
Become the foreground of off-line transaction by mobile Internet based on the large-scale household electricity business cloud plateform system of CDN and load-balancing technique, offline businesses can attract customers with on line, attract solid shop/brick and mortar store experience consume under more consumer to line, increase volume of business, system can meet the requirements for access of more users, can meet the elasticity dilatation demand of trade company lower than electric business's platform; Consumer can screen the products & services of high performance-price ratio by website or mobile terminal, convenient effective target household building materials commodity purchasing oneself economically.
The beneficial effect of the household electricity business's cloud system and implementation method that the present invention is based on CDN and load-balancing technique is:
One, realize client and access electric business's Platform Server that multiple stage works simultaneously simultaneously, by the request dispatching of user to one of whole electric business's platform nodes network suitable node, improve the service processing ability of on-line system, solve network congestion problem, service provides nearby, realize geographical position independence, solve system concurrency number of users increase fast after system access performance bottleneck problem, promote the Consumer's Experience of user access system, allow household building materials e-commerce system evade systematic function bottleneck because user concurrent causes;
Two, avoid network key position and occur single point failure, improve utilization ratio and the response speed of background server and other resources, imitate the bandwidth of extended network equipment and server, increase throughput, Strengthens network data-handling capacity, the flexibility improving network and availability, better access quality for user provides;
Three, the Single Point of Faliure of server key position is avoided, great number cost when avoiding system hardware to upgrade drops into the demand that just can meet current traffic, electricity business's platform backstage realizes calculating by cloud computing platform, store and the automatic deployment of Internet resources, distribution according to need scheduling, elastic telescopic, flexible dilatation, energy-saving and emission-reduction function, possess set expandability flexibly.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (8)
1. the large-scale household electricity business cloud plateform system based on CDN and load-balancing technique, it is characterized in that, comprise: user App module, load balancing module and CDN node module, described load balancing module comprises GSLB module and LSLB module, described CDN node module comprises some Cache node servers, select the described CDN node module nearest with described user App module by described load balancing module, described user App module and nearest described CDN node module carry out exchanges data.
2. the large-scale household electricity business cloud plateform system based on CDN and load-balancing technique according to claim 1, it is characterized in that, also comprise electric business's cloud platform primal system module, electric business's cloud platform primal system module receives and preserves the WEB information of whole system.
3. the large-scale household electricity business cloud plateform system based on CDN and load-balancing technique according to claim 1, it is characterized in that, electricity business system management module, described electric business's system management module manages the resource pool of whole system, content, scheduling of resource and network monitoring behavior.
4. the large-scale household electricity business cloud plateform system based on CDN and load-balancing technique according to claim 1, it is characterized in that, electricity quotient system system Networked Control and Management module, the network operation of described electric quotient system system Networked Control and Management module to whole system is monitored.
5. the large-scale household electricity business cloud plateform system based on CDN and load-balancing technique according to claim 3, it is characterized in that, described resource pool comprises computational resource pond, memory resource pool and cloud platform management server cluster.
6. the large-scale household electricity business cloud plateform system based on CDN and load-balancing technique according to claim 1, it is characterized in that, the implementation method of system comprises:
(1) user opens by mobile terminal App module or user to want website domain name by input in the web browser of foreground;
(2) user's request is directed directly at GSLB module;
(3) GSLB module is shaken hands by TCP/IP and is obtained the IP of client;
(4) whether the network segment searched in static path table belonging to this IP exists, if existed, then performs (8) step; If there is no, then (5) step is performed;
(5) whether the network segment searched in dynamic route table belonging to this IP exists, if existed, then performs (8) step; If there is no, then (6) step is performed;
(6) GSLB module repeating query test LSLB module is from the distance of user and time delay, and GSLB module accepts and judges the information of test, to determine optimum website;
(7) network segment adding this place, IP address, to dynamic routing table recently, directly connects with the LSLB module device of optimum Distribution Layer node for subsequent user;
(8) this client is directed to the highest LSLB module of priority set in static path table by transparent redirection order;
(9) based on user's close, according to the load balancing of GSLB module, user is redirected to optimal L SLB Module nodes;
(10) LSLB module carries out the detection of health status poll to the health/load of Cache node server;
(11) to the request of access to content, local load balancing process is carried out to user, load balancing module, according to the health/load of Cache node server, Cache node server distribution of content situation, to select in CDN node module optimal Cache node server to provide service for user;
(12) judge select Cache node server in whether exist user request content, if user request content exist, then perform (16) step; If the content of user's request does not exist, then perform (13) step;
(13) when the content of user's request does not exist, the passive and synchronous operation of local load balancing module triggering system;
(14) ask GSLB module polls overall situation contents directory, the link information of this content is returned to Cache node server by GSLB module;
(15) Cache node server is by Link redirect mode for user provides service, and user is pointed to original contents server and obtain content, this flow process terminates;
(16) when the content of user's request exists, user is redirected to Cache node server and is provided service by load balancing module;
(17) user asks Cache node server to provide service;
(18) user is final connects with optimum Cache node server, and this flow process terminates.
7. the electricity business's cloud system of the household based on CDN and load-balancing technique according to claim 6 and implementation method, it is characterized in that, the concrete steps of described passive and synchronous operation comprise:
(1) user initiates content requests to Cache node server;
(2) Cache node server judges the whether local hit of this content, if hit, then jumps to (3) step; If miss, then jump to (4) step;
(3) when this content is hit in this locality, then provide service directly to user, this flow process terminates;
(4) when this content miss, then source information is obtained to LSLB module request;
(5) LSLB module searches information according to user's requirements for access from local content directory;
(6) LSLB module judges whether the solicited message that can obtain this content, if passable, then jumps to (7) step; If cannot, then jump to (8) step;
(7) LSLB module gets source information in this CDN node module, and user's link transferred on other Cache node servers, provide service to user, this flow process terminates;
(8) LSLB module request GSLB module obtaining information;
(9) GSLB module searches information from overall contents directory according to demand, and returns to LSLB module;
(10) LSLB module is according to strategy, judges that this content is the need of PULL to Cache node server, if needed, then jumps to (11); If do not needed, then flow process terminates;
(11) LSLB module is to the source information of Cache node server returned content;
(12) when needed, then (14) step is jumped to; When not needed, (13) step is jumped to;
(13) Cache node server provides service by the mode of Link redirect to user, and this flow process terminates;
(14) Cache node server from source server by content PULL to this locality;
(15) judged whether that PULL operates, if do not completed, then circulate this step; After completing, perform (16) step;
(16) Cache node server request LSLB module upgrades local content directory;
(17) Cache node server sends content update request to electric business's system management module;
(18) electric business's system management module upgrades overall contents directory.
8. the large-scale household electricity business cloud plateform system based on CDN and load-balancing technique according to claim 2,3,4 or 6, it is characterized in that, the implementation method of system for content distribution comprises:
(1) electric business's system management module request GSLB module completes contents distribution, carries content distribution policy information, comprises content identification, load balancing module address, priority;
(2) GSLB module notice LSLB module starts choice Cache node server flow process;
(3) LSLB module carries out the detection of health status poll to the health/load of Cache node server;
(4) LSLB module is according to the health/load of Cache node server, Cache node server distribution of content situation, selects optimal Cache servers in CDN node;
(5) LSLB module notice Cache node server obtains content;
(6) Cache node server obtains content from original server;
(7) Cache node server obtains successfully to LSLB module returned content;
(8) Cache node server LSLB module upgrades local content directory, and obtains successfully to GSLB module returned content;
(9) GSLB module upgrades the distribution situation of this content in contents directory;
(10) GSLB module notifies electric business's system management module contents Distribution Results.
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