CN106130791B - Cache equipment service capability traversal test system and method based on service quality - Google Patents
Cache equipment service capability traversal test system and method based on service quality Download PDFInfo
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Abstract
The invention provides a service quality-based cache equipment service capability traversal test system and a service quality-based cache equipment service capability traversal test method, wherein the service quality-based cache equipment service capability traversal test system comprises a source station, a cache type judgment module, a cache service node server cluster, a monitoring module, a quality evaluation module and an alarm monitoring module; judging the type of the cache service node through a cache type judging module; the monitoring module calls a monitoring unit to perform periodic traversal test on the cache service node server cluster; the cache service node server cluster directly responds to the monitoring module, returns to the source to respond, redirects to the source station to respond, refuses to respond or does not respond; the monitoring module outputs the monitoring data to the quality evaluation module; and the alarm monitoring module makes corresponding alarm for the cache service nodes in the cache service node server cluster through the quality evaluation module. The invention carries out full coverage monitoring on all the cache service nodes in the cache service node server cluster in a traversal mode, thereby improving the efficiency of testing the cache service quality.
Description
Technical Field
The invention relates to the technical field of internet, in particular to a cache device service capability traversal test system and method based on service quality.
Background
The cache is used as an effective internet content acceleration system and is widely applied to various large telecom operators, the access speed of content resources of the operators is effectively improved, the settlement cost is reduced, and the continuous and stable service capability of the cache service nodes is particularly important along with the large-scale deployment of the cache system and the increase of the number of access users.
At present, the monitoring of the cache service quality is realized by a cache network manager and a third-party tool packet capturing analysis mode, and the monitoring mode has the following defects and shortcomings:
(1) the cache network manager still continues to evaluate the service quality of the cache server in a traditional monitoring mode by monitoring Key Performance Indicators (KPIs) such as a CPU, an internal memory, a connection number and the like of the cache server, but the KPI cannot accurately measure the service quality, and particularly under the current complex network environments such as multiple exits, multiple routes, multiple priorities and the like, the system performance indicators are not all factors affecting the service quality, even if the system performance indicators are normal but the event of the fault of the bearer service occurs occasionally, the cache network manager cannot meet the monitoring requirement on the cache service quality.
(2) The monitoring mode cannot cover the quality of the actual application cache service of the user.
(3) Due to the influence of DNS (domain name system) analysis (scheduling), the packet capturing mode of the third-party tool is low in testing efficiency and cannot ensure that all cache service nodes can be covered.
(4) The third-party tool packet grabbing mode cannot carry out automatic testing and cannot give an alarm to a fault node and a service quality reduction node.
(5) The third-party tool packet capturing mode cannot test the quality of the cached back source service, and the part of resources are usually important factors causing poor caching service quality.
For example, the invention patent of chinese patent CN 103516731A provides a method, a cache server and a system for providing a cache server, however, the invention cannot accurately measure the service quality of the cache server.
Disclosure of Invention
The object of the present invention is to solve at least one of the technical drawbacks mentioned.
Therefore, the invention aims to provide a service quality-based cache device service capability traversal test system and method, which can be used for carrying out full-coverage monitoring on all cache service nodes in a cache service node server cluster in a traversal mode and improving the test efficiency of the cache service quality.
In order to achieve the aim, the invention provides a traversal test system for the service capability of cache equipment based on service quality, which comprises a source station, a cache type judgment module, a cache service node server cluster, a monitoring module, a quality evaluation module and an alarm monitoring module, wherein the source station is connected with the cache type judgment module;
the cache type judging module is independent and dependent with the cache service node server cluster, the monitoring module, the quality evaluation module and the alarm monitoring module;
the cache type judging module is respectively connected with the cache service node server cluster and the monitoring module, the cache service node server cluster is respectively connected with the source station and the monitoring module, the monitoring module is connected with the quality evaluation module by calling the monitoring unit, and the quality evaluation module is connected with the alarm monitoring module.
Further, the cache type judgment module comprises a large file cache judgment unit and a small file cache judgment unit, and the large file cache judgment unit and the small file cache judgment unit are respectively connected with the monitoring module and the cache service node server cluster.
Further, the monitoring module comprises an HTTP monitoring unit, an HTTP proxy monitoring unit, and an appointed HOST monitoring unit, and the HTTP monitoring unit, the HTTP proxy monitoring unit, and the appointed HOST monitoring unit are all connected to the cache type determination module and the cache service node server cluster, respectively.
Further, the quality evaluation module comprises a small file cache service node quality evaluation unit and a large file cache service node quality evaluation unit, and the small file cache service node quality evaluation unit and the large file cache service node quality evaluation unit are respectively connected with the monitoring module and the alarm monitoring module.
Further, the alarm monitoring module includes a source station resource alarm unit, a cache service node alarm unit, and a cache network/policy alarm unit, where the source station resource alarm unit, the cache service node alarm unit, and the cache network/policy alarm unit are all connected to the small file cache service node quality evaluation unit and the large file cache service node quality evaluation unit, respectively.
Furthermore, a plurality of cache service nodes are arranged in the cache service node server cluster, and the monitoring module is connected with the plurality of cache service nodes in the cache service node server cluster in a traversing manner through the inspection probe.
Further, the cache type judgment module outputs a cache list, and the cache list is connected with the quality evaluation module.
A traversal test method for service capability of cache equipment based on service quality comprises the following steps:
step S1, judging the cache service node type in a cache service node server cluster through a cache type judging module;
s2, according to the cache type output by the cache type judging module, calling a monitoring unit by a monitoring module to perform periodic traversal test on the cache service node server cluster;
s3, when the periodic traversal test is carried out, the cache service node server cluster carries out direct response, source return response, redirection to a source station response, response rejection or no response on the monitoring module;
s4, according to the response state, the monitoring module outputs the monitoring data to a quality evaluation module, and the quality evaluation module respectively evaluates the quality of the cache service nodes in the cache service node server cluster;
the calculation formula for evaluating each index score is as follows:
a connection time index score P1= Emin + (X1 max-K1) (Emax-Emin)/(X1 max-X1 min);
a first byte time index score P2= Emin + (X2 max-K2) (Emax-Emin)/(X2 max-X2 min);
the throughput index score P3= Emin + (K3-X3 min) (Emax-Emin)/(X3 max-X3 min);
quality of service D = (P1 × 20% + P2 × 40% + P3 × 40%) + access success rate;
wherein, K1 represents a connection time actual test index, K2 represents a first byte time actual test index, K3 represents a throughput rate actual test index, X1 represents an interval value corresponding to K1, X2 represents an interval value corresponding to K2, X3 represents an interval value corresponding to K3, and E represents an interval score;
and S5, according to the evaluation data of the quality evaluation module, the alarm monitoring module gives corresponding alarm to the cache service nodes in the cache service node server cluster.
Further, in step S2, the monitoring method of the cache service node server cluster by the monitoring module is as follows:
when the cache service node type is judged to be a large file cache service node in the step S1, an HTTP monitoring unit is adopted to carry out routing inspection test;
when the type of the cache service node is judged to be the small file cache service node in the step S1, the HTTP proxy monitoring unit is adopted to carry out routing inspection test, and when the HTTP proxy monitoring unit fails in testing, the appointed HOST monitoring unit is called to carry out routing inspection test.
Further, in step S5, the alarm monitoring module alarms the cache service node by setting a threshold, and matches the alarm unit with each quality index;
when the cache return fails, calling the monitoring unit to request the successful access redirected to the source station, and matching the alarm monitoring module as a cache network/strategy alarm unit;
when the calling monitoring unit requests the access which is redirected to the source station fails, the alarm monitoring module is matched with a source station resource alarm unit;
when the calling monitoring unit cannot judge whether the resource exists in the cache server, but the request is rejected or the access fails, the alarm monitoring module is matched with the cache service node alarm unit.
The modularized and unitized design structure is convenient for later-stage system function optimization and expansion; the invention achieves full coverage monitoring of all cache service nodes in the cache service node server cluster in a traversal mode, and improves the testing efficiency of the cache service quality; according to the invention, the alarm monitoring module can alarm the cache fault node and the quality reduction node in a single traversal test period at the fastest speed; the invention covers the process of network and cache back source, and covers the cache service quality problem caused by cache itself and other factors.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
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The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a schematic diagram of a patrol probe traversing and connecting cache service nodes in accordance with the present invention;
FIG. 3 is an overall flow chart of the present invention;
fig. 4 is a flow chart of the operation of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The invention provides a traversal test system for service capability of cache equipment based on service quality, which comprises the following components with reference to the attached figure 1: the system comprises a source station 3, a cache type judgment module 1, a cache service node server cluster 2, a monitoring module 4, a quality evaluation module 6 and an alarm monitoring module 7;
the cache type judgment module 1, the cache service node server cluster 2, the monitoring module 4, the quality evaluation module 6 and the alarm monitoring module 7 are independent and dependent with each other;
the cache type judging module 1 is respectively connected with the cache service node server cluster 2 and the monitoring module 4, the cache service node server cluster 2 is respectively connected with the source station 3 and the monitoring module 4, the monitoring module 4 is connected with the quality evaluation module 6 by calling the monitoring unit 5, and the quality evaluation module 6 is connected with the alarm monitoring module 7.
Specifically, the cache type determining module 1 includes a large file cache determining unit 101 and a small file cache determining unit 102, and both the large file cache determining unit 101 and the small file cache determining unit 102 are connected to the monitoring module 4 and the cache service node server cluster 2, respectively.
A plurality of cache service nodes are arranged in the cache service node server cluster 2, and the monitoring module 4 is connected with the plurality of cache service nodes in the cache service node server cluster 2 in a traversing manner through the inspection probe. As shown in fig. 2.
The cache type judgment module 1 outputs a cache list, and the cache list is connected with the quality evaluation module 6.
The monitoring module 4 comprises an HTTP monitoring unit 401, an HTTP proxy monitoring unit 402 and a designated HOST monitoring unit 403, wherein the HTTP monitoring unit 401, the HTTP proxy monitoring unit 402 and the designated HOST monitoring unit 403 are respectively connected with the cache type judging module 1 and the cache service node server cluster 2.
Thirdly, the quality evaluation module 6 comprises a small file cache service node quality evaluation unit 602 unit and a large file cache service node quality evaluation unit 601, and both the small file cache service node quality evaluation unit 602 and the large file cache service node quality evaluation unit 601 are respectively connected with the monitoring module 4 and the alarm monitoring module 7.
In addition, the alarm monitoring module 7 includes a source station resource alarm unit 701, a cache service node alarm unit 702, and a cache network/policy alarm unit 703, where the source station resource alarm unit 701, the cache service node alarm unit 702, and the cache network/policy alarm unit 703 are respectively connected to the small file cache service node quality evaluation unit 602 and the large file cache service node quality evaluation unit 601.
The working principle is as follows: the cache type judging module judges the type of a cache service node in a cache service node server cluster through a large file cache judging unit and a small file cache judging unit, the monitoring module outputs and calls the monitoring unit after the cache type judging module judges the cache type, the monitoring module traverses and connects a plurality of cache service nodes in the cache service node server cluster through an inspection probe, accordingly, the HTTP monitoring unit is called for the large file cache service node to carry out inspection test, the small file cache service node calls the HTTP proxy monitoring unit or a designated HOST monitoring unit to carry out inspection test, monitoring data is transmitted to a quality evaluating module, the quality evaluating module carries out quality evaluation through the large file cache service node quality evaluating unit or the small file cache service node quality evaluating unit, the small file cache each service node outputs test time, test target (cache service node IP), connection time, connection success rate, first byte time, download rate, access success rate, return code index, the large file cache service node outputs test time, test target (service node IP connection time, first byte time, download rate, access code return code index, and calculates the total quality score of each cache service node (the alarm quality score is calculated through the monitoring module), and the total quality score is calculated through the quality evaluating module.
The invention also provides a traversal test method for the service capability of the cache equipment based on the service quality, which comprises the following steps as shown in figures 3 and 4:
step S1, judging the cache service node type in the cache service node server cluster through a cache type judging module.
The cache type judging module comprises a large file cache judging unit and a small file cache judging unit which judge according to the IP address of the cache server with known type.
And S2, according to the cache type output by the cache type judging module, calling a monitoring unit by the monitoring module to perform periodic traversal test on the cache service node server cluster.
The monitoring method of the cache service node server cluster by the monitoring module is as follows:
when the cache service node type is judged to be a large file cache service node in the step S1, an HTTP monitoring unit is adopted to carry out routing inspection test;
when the type of the cache service node is judged to be the small file cache service node in the step S1, the HTTP proxy monitoring unit is adopted to carry out routing inspection test, and when the HTTP proxy monitoring unit fails in testing, the appointed HOST monitoring unit is called to carry out routing inspection test.
And S3, when the periodic traversal test is carried out, the cache service node server cluster carries out direct response, source return response, redirection to a source station response, response rejection or no response on the monitoring module.
The monitoring module has the following access conditions to the cache resources:
1) The access resource already exists in the cache service node
For the request resource existing in the cache service node, the detected cache service node directly responds (return code 200), and in the process, the monitoring unit is called to record the access data of each cache service node.
2) Accessing resources not present in the cache service node
For a request resource which does not exist in a cache service node at present, a tested cache service node returns to a source station to source the resource and then responds to a request of a calling monitoring unit, the calling monitoring unit records access data of the request to the source return response, for the source return failure, the cache service node returns 302 a redirection request to the source station for access, if the source station is successfully accessed, a calling monitoring module records the redirection data of the cache service node 302 and records the source station access data (the data of the source station successfully accessed), and if the source station resource is unsuccessfully accessed, the calling monitoring module records the redirection data of the cache service node 302 and records the source station access data (the data of the source station failed access).
3) Access failure
If the request resource can not be judged to exist in the cache service node, but the calling monitoring unit is called to reject the request or the access fails, the calling monitoring module records the fault data of the tested cache service node.
S4, according to the response state, the monitoring module outputs the monitoring data to a quality evaluation module, and the quality evaluation module respectively evaluates the quality of the cache service nodes in the cache service node server cluster;
the calculation formula for evaluating each index score is as follows:
a connection time index score P1= Emin + (X1 max-K1) (Emax-Emin)/(X1 max-X1 min);
a first byte time index score P2= Emin + (X2 max-K2) (Emax-Emin)/(X2 max-X2 min);
the throughput index score P3= Emin + (K3-X3 min) (Emax-Emin)/(X3 max-X3 min);
quality of service D = (P1 × 20% + P2 × 40% + P3 × 40%) + access success rate;
wherein K1 represents a connection time actual test index, K2 represents a first byte time actual test index, K3 represents a throughput rate actual test index, X1 represents an interval value corresponding to K1, X2 represents an interval value corresponding to K2, X3 represents an interval value corresponding to K3, and E represents an interval score.
The following describes in detail the index scores of the large file cache service node and the small file cache service node in the cache service node:
table-large file buffer service node quality evaluation table
Table two small file buffer service node quality evaluation table
As can be seen from the table one and the table two, the value ranges of X2 and X3 in the calculation formula for evaluating the score of each index of the large file cache service node and the small file cache service node are different, that is, the interval ranges of the values of the actual test index during the first byte and the actual test index of the throughput rate are different.
And S5, according to the evaluation data of the quality evaluation module, the alarm monitoring module alarms the cache service node in a threshold value setting mode and matches alarm units through all quality indexes.
When the cache return fails, calling the monitoring unit to request the successful access redirected to the source station, and matching the alarm monitoring module as a cache network/strategy alarm unit;
when the calling monitoring unit requests that the access to the source station is redirected fails, the alarm monitoring module is matched with a source station resource alarm unit;
when the calling monitoring unit cannot judge whether the resource exists in the cache server, but the request is rejected or the access fails, the alarm monitoring module is matched with the cache service node alarm unit.
The description is given by way of example below:
for example: the service quality of a large file and small file cache system constructed by a company needs to be monitored, wherein 50 large file cache service nodes, 30 small file cache service nodes, cache service node types, cache black and white lists, IP (Internet protocol) of each cache service node and service port numbers are known, and accordingly, the cache device service capacity traversal test system and method based on the service quality can establish the following traversal tests: the large file cache was tested using the cached 10M large file (e.g., 360SMail _1.0.15.603_XiazaiBa. Zip), and the small file cache was tested using the whitelist domain name URL http:// n.sinaimg. Cn/ent/transform/20160624/4P34-fxtmweh2461428. Jpg.
Then inputting 50 large file cache service nodes to be monitored and 30 small file cache service nodes to be monitored IP and port numbers to the system, enabling the system to complete large file caching, curl-L http://111.13.109.41/360SMail _1.0.15.603_, xiaozaiazaiaba.zip (111.13.109.41 is one of cache service nodes), small file caching curl-x 111.13.110.75 80http:// n.sinaiimg.cn/ent/transform/20160624/4P 34-fxtwehm2461428. Jpg, or curl-H "HOST: n.sinaiimg.cn" http://111.13.110.75, 80/ent/transform/624/4P 34-fxthm61428. Jpg format access requirements, then setting up the traversal cycle, test cycle, and making the traversal test result, the access rate, the access cycle, the test result, the access cycle, the collection cycle, and the download cycle of the large file to finish (the following) and the following test results are obtained:
TABLE 1 periodic traversal test results Table
And automatically judging the service fault of the cache service node 2 according to the data system in the table above, matching the service fault with a cache service node alarm unit, and generating a cache service node fault alarm, wherein the service quality of other cache service nodes except the cache service node 2 is excellent, the quality of cache source return is good, and the time consumed for source return downloading is about 5ms.
The invention has the advantages that the cache service quality is monitored in a traversing way in the network of the communication operator, the business is realized, and the good monitoring effect is obtained.
The invention has the advantages that the modularized and unitized design structure is convenient for the optimization and expansion of the later system function; the method measures the service quality of each cache service node from the application angle, is the most direct and effective way for monitoring the service quality of each cache service node, and is powerful supplement for a cache network manager; the full coverage monitoring of all cache service nodes is achieved in a traversal mode, and the testing efficiency of the cache service quality is improved; the invention can alarm the cache fault node and the service quality degradation node in a single test period at the fastest speed; the invention covers the process of network and cache back source, and covers the cache service quality problem caused by cache itself and other factors.
Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments without departing from the principles and spirit of the present invention. The scope of the invention is defined by the appended claims and their full range of equivalents.
Claims (10)
1. A traversal test system for service capability of cache equipment based on service quality is characterized by comprising a source station, a cache type judgment module, a cache service node server cluster, a monitoring module, a quality evaluation module and an alarm monitoring module;
the cache type judging module is independent and dependent with the cache service node server cluster, the monitoring module, the quality evaluation module and the alarm monitoring module;
the cache type judgment module is respectively connected with the cache service node server cluster and the monitoring module, the cache service node server cluster is respectively connected with the source station and the monitoring module, the monitoring module is connected with the quality evaluation module by calling the monitoring unit, and the quality evaluation module is connected with the alarm monitoring module; wherein,
the cache type judging module is used for judging the type of the cache service node in the cache service node server cluster;
the monitoring module is used for calling the monitoring unit to perform periodic traversal test on the cache service node server cluster according to the cache type output by the cache type judging module;
the cache service node server cluster is used for performing direct response, source return response, redirection to a source station response, response rejection or no response on the monitoring module when performing periodic traversal test;
the monitoring module is also used for outputting monitoring data to the quality evaluation module according to the response state;
the quality evaluation module is used for respectively evaluating the quality of the cache service nodes in the cache service node server cluster;
the evaluation index score calculation formula is as follows:
a connection time index score P1= Emin + (X1 max-K1) (Emax-Emin)/(X1 max-X1 min);
the first byte time index score P2= Emin + (X2 max-K2) (Emax-Emin)/(X2 max-X2 min);
the throughput index score P3= Emin + (K3-X3 min) (Emax-Emin)/(X3 max-X3 min);
quality of service D = (P1 × 20% + P2 × 40% + P3 × 40%) + access success rate;
wherein, K1 represents a connection time actual test index, K2 represents a first time actual test index, K3 represents a throughput rate actual test index, X1 represents an interval value corresponding to K1, X2 represents an interval value corresponding to K2, X3 represents an interval value corresponding to K3, and E represents an interval score;
and the alarm monitoring module is used for giving corresponding alarm to the cache service nodes in the cache service node server cluster according to the evaluation data of the quality evaluation module.
2. The cache device service capability traversal testing system based on quality of service as claimed in claim 1, wherein: the cache type judging module comprises a large file cache judging unit and a small file cache judging unit, and the large file cache judging unit and the small file cache judging unit are respectively connected with the monitoring module and the cache service node server cluster.
3. The cache device service capability traversal test system based on quality of service as claimed in claim 1, wherein: the monitoring module comprises an HTTP monitoring unit, an HTTP proxy monitoring unit and an appointed HOST monitoring unit, and the HTTP monitoring unit, the HTTP proxy monitoring unit and the appointed HOST monitoring unit are respectively connected with the cache type judging module and the cache service node server cluster.
4. The cache device service capability traversal testing system based on quality of service as claimed in claim 1, wherein: the quality evaluation module comprises a small file cache service node quality evaluation unit and a large file cache service node quality evaluation unit, and the small file cache service node quality evaluation unit and the large file cache service node quality evaluation unit are respectively connected with the monitoring module and the alarm monitoring module.
5. The cache device service capability traversal testing system based on quality of service as claimed in claim 1, wherein: the alarm monitoring module comprises a source station resource alarm unit, a cache service node alarm unit and a cache network/strategy alarm unit, wherein the source station resource alarm unit, the cache service node alarm unit and the cache network/strategy alarm unit are respectively connected with the small file cache service node quality evaluation unit and the large file cache service node quality evaluation unit.
6. The cache device service capability traversal testing system based on quality of service as claimed in claim 1, wherein: the monitoring module is connected with the plurality of cache service nodes in the cache service node server cluster in a traversing manner through the inspection probe.
7. The cache device service capability traversal testing system based on quality of service as claimed in claim 1, wherein: and the cache type judging module outputs a cache list.
8. A cache device service capability traversal test method based on service quality is characterized by comprising the following steps:
step S1, judging the cache service node type in a cache service node server cluster through a cache type judging module;
s2, according to the cache type output by the cache type judging module, calling a monitoring unit by a monitoring module to perform periodic traversal test on the cache service node server cluster;
s3, when the periodic traversal test is carried out, the cache service node server cluster carries out direct response, source return response, redirection to a source station response, response rejection or no response on the monitoring module;
s4, according to the response state, the monitoring module outputs the monitoring data to a quality evaluation module, and the quality evaluation module respectively evaluates the quality of the cache service nodes in the cache service node server cluster;
the evaluation index score calculation formula is as follows:
a connection time index score P1= Emin + (X1 max-K1) (Emax-Emin)/(X1 max-X1 min);
a first byte time index score P2= Emin + (X2 max-K2) (Emax-Emin)/(X2 max-X2 min);
the throughput index score P3= Emin + (K3-X3 min) (Emax-Emin)/(X3 max-X3 min);
quality of service D = (P1 × 20% + P2 × 40% + P3 × 40%) + access success rate;
wherein, K1 represents a connection time actual test index, K2 represents a first byte time actual test index, K3 represents a throughput rate actual test index, X1 represents an interval value corresponding to K1, X2 represents an interval value corresponding to K2, X3 represents an interval value corresponding to K3, and E represents an interval score;
and S5, according to the evaluation data of the quality evaluation module, the alarm monitoring module gives corresponding alarm to the cache service nodes in the cache service node server cluster.
9. The traversal testing method for service capability of cache device based on service quality as claimed in claim 8, wherein:
in step S2, the monitoring method of the cache service node server cluster by the monitoring module is as follows:
when the cache service node type is judged to be a large file cache service node in the step S1, an HTTP monitoring unit is adopted to carry out routing inspection test;
when the type of the cache service node is judged to be the small file cache service node in the step S1, the HTTP proxy monitoring unit is adopted to carry out routing inspection test, and when the HTTP proxy monitoring unit fails in testing, the appointed HOST monitoring unit is called to carry out routing inspection test.
10. The traversal testing method for service capability of cache device based on service quality as claimed in claim 8, wherein:
in step S5, the alarm monitoring module alarms the cache service node by setting a threshold value and matches the alarm unit through each quality index;
when the cache return fails, calling the monitoring unit to request the successful access redirected to the source station, and matching the alarm monitoring module as a cache network/strategy alarm unit;
when the calling monitoring unit requests the access which is redirected to the source station fails, the alarm monitoring module is matched with a source station resource alarm unit;
when the calling monitoring unit cannot judge whether the resource exists in the cache server, but the request is refused or the access fails, the alarm monitoring module is matched with the cache service node alarm unit.
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