CN109347944A - A kind of domain name analytic method and device - Google Patents
A kind of domain name analytic method and device Download PDFInfo
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- CN109347944A CN109347944A CN201811184588.5A CN201811184588A CN109347944A CN 109347944 A CN109347944 A CN 109347944A CN 201811184588 A CN201811184588 A CN 201811184588A CN 109347944 A CN109347944 A CN 109347944A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
- H04L67/1008—Server selection for load balancing based on parameters of servers, e.g. available memory or workload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
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Abstract
This application discloses a kind of domain name analytic method and devices, comprising: receives the domain name mapping for target domain name that client is sent and requests；According to the corresponding relationship of the alternate node mark and the CPU usage of alternate node that pre-save, the minimum alternate node of CPU usage is determined as destination node；Alternate node is any one node in multiple nodes corresponding with target domain name；If destination node has virtual ip address, illustrates that destination node can provide network service, then the virtual ip address of destination node is returned into client.It can be seen that, when client initiates the domain name mapping request to target domain name, can the virtual ip address of node CPU usage is minimum and that network service is provided return to a client, so that client can use the corresponding business of the node processing, due to client return be the smallest node of CPU usage virtual ip address, therefore, to a certain extent can balanced each node service processing pressure.
Description
Technical field
This application involves computer fields, more particularly to a kind of domain name analytic method and device.
Background technique
With the development of science and technology, there is this concept of computer cluster.Computer cluster is loosely collected by one group
At computer software and/or hardware connect height closely cooperation complete calculate work.Single meter in group system
Calculation machine is commonly referred to as node.Calculating speed and/or reliability of the cluster computer commonly used to improve single computer.General feelings
Cluster computer wants much higher than single computer, such as work station or the supercomputer ratio of performance to price under condition.
Load balancing cluster is a kind of computer cluster, when load balancing cluster is run, can pass through front end load equilibrium
Workload is distributed on a group node of rear end by device, to reach the high-performance and high availability of whole system.
The load balancing of load balancing cluster at present are as follows: client forward end load balancer, which is sent, is directed to aiming field
When the domain name mapping request of name, front end load balanced device returns to the corresponding IP list of target domain name to client according to polling schemas
In IP address, such as include 3, respectively the first IP, the 2nd IP and the 3rd IP in the corresponding IP list of target domain name, then before
When end load balancer receives first domain name mapping request for being directed to target domain name, to the visitor for initiating domain name mapping request
Family end returns to the first IP, when front end load equalizer input to second domain name mapping for target domain name is requested, to initiation
The client of domain name mapping request returns to the 2nd IP, and front end load equalizer input is directed to the domain name of target domain name to third
When analysis request, the 3rd IP is returned to the client that the domain name mapping is requested is initiated.
But the access that client is initiated can only be balanced on each node by this polling schemas, but due to each
Client access is not exactly the same to operation performed by node, and therefore, this polling schemas does not ensure that each node
Service processing pressure is balanced.
Summary of the invention
Technical problems to be solved in this application are how to make the service processing pressure of each node balanced, provide one kind
Domain name analytic method and device.
In a first aspect, the embodiment of the present application provides a kind of domain name analytic method, which comprises
The domain name mapping for target domain name that client is sent is received to request；
According to the corresponding relationship of the alternate node mark and the CPU usage of the alternate node that pre-save, CPU is made
It is determined as destination node with the minimum alternate node of rate；Wherein, the alternate node is corresponding multiple with the target domain name
Any one node in node；
If the destination node has virtual ip address, the virtual ip address of the destination node is returned into the visitor
Family end.
Optionally, if the destination node has virtual ip address, by the virtual ip address of the destination node
Return to the client, comprising:
According to the corresponding relationship between alternate node mark and the virtual ip address of alternate node, the destination node is determined
It identifies whether with virtual ip address；
If it is, the virtual ip address of the destination node is returned to the client.
Optionally, the method also includes:
Obtain the CPU usage of the alternate node；
Save the corresponding relationship of the alternate node mark and the CPU usage of the alternate node.
Optionally, the alternate node mark that the basis pre-saves is corresponding with the CPU usage of the alternate node
The minimum alternate node of CPU usage is determined as destination node by relationship, comprising:
If the load balancing of the target domain name is CPU usage balance policy, according to the alternative section pre-saved
The corresponding relationship of the CPU usage of point identification and the alternate node, is determined as target for the minimum alternate node of CPU usage
Node.
Optionally, the alternate node mark, comprising:
The physical address of the alternate node.
Second aspect, the embodiment of the present application provide a kind of domain name mapping device, and described device includes:
Receiving unit, the domain name mapping for target domain name for receiving client transmission are requested；
Determination unit, for pair according to the alternate node mark and the CPU usage of the alternate node that pre-save
It should be related to, the minimum alternate node of CPU usage is determined as destination node；Wherein, the alternate node is and the target
Any one node in the corresponding multiple nodes of domain name；
Return unit, if there is virtual ip address for the destination node, by the virtual IP address of the destination node
Location returns to the client.
Optionally, the return unit, is specifically used for:
According to the corresponding relationship between alternate node mark and the virtual ip address of alternate node, the destination node is determined
It identifies whether with virtual ip address；
If it is, the virtual ip address of the destination node is returned to the client.
Optionally, described device further include:
Acquiring unit, for obtaining the CPU usage of the alternate node；
Storage unit saves the corresponding relationship of the alternate node mark and the CPU usage of the alternate node.
Optionally, the determination unit, is specifically used for:
If the load balancing of the target domain name is CPU usage balance policy, according to the alternative section pre-saved
The corresponding relationship of the CPU usage of point identification and the alternate node, is determined as target for the minimum alternate node of CPU usage
Node.
Optionally, the alternate node mark, comprising:
The physical address of the alternate node.
Compared with prior art, the embodiment of the present application has the advantage that
Domain name analytic method and device provided by the embodiments of the present application, this method comprises: receiving being directed to for client transmission
The domain name mapping of target domain name is requested；According to the alternate node mark and the CPU usage of the alternate node pre-saved
The minimum alternate node of CPU usage is determined as destination node by corresponding relationship；Wherein, the alternate node is and the mesh
Mark any one node in the corresponding multiple nodes of domain name；If the destination node has virtual ip address, illustrate target section
Point can provide network service, then the virtual ip address of the destination node is returned to the client.It can be seen that at this
Apply in embodiment, when client initiates the domain name mapping request to target domain name, by CPU usage minimum and can mention
Client is returned to for the virtual ip address of the node of network service, so as to can use the node processing corresponding for client
Business, due to client return be the smallest node of CPU usage virtual ip address, i.e. service processing pressure is the smallest
The virtual ip address of node, therefore, to a certain extent can balanced each node service processing pressure.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in application, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the block schematic illustration of an exemplary application scene in the embodiment of the present application；
Fig. 2 is a kind of flow diagram of domain name analytic method in the embodiment of the present application；
Fig. 3 is a kind of structural schematic diagram of domain name mapping device in the embodiment of the present application.
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only this
Apply for a part of the embodiment, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall in the protection scope of this application.
Present inventor has found after study, in the prior art, can only be initiated client using polling schemas
Access be balanced on each node, but as each client access it is not exactly the same to operation performed by node,
This polling schemas does not ensure that the service processing pressure of each node is balanced.
The inventor of the present inventor has found that the CPU usage of node characterizes node to a certain extent under study for action
Service processing pressure, therefore, when carrying out load balancing, it may be considered that this factor of CPU usage.
In consideration of it, the embodiment of the present application provides a kind of domain name analytic method and device, this method comprises: receiving client
The domain name mapping for target domain name sent is requested；According to the alternate node mark and the alternate node pre-saved
The minimum alternate node of CPU usage is determined as destination node by the corresponding relationship of CPU usage；Wherein, the alternate node
For any one node in multiple nodes corresponding with the target domain name；If the destination node has virtual ip address,
Illustrate that destination node can provide network service, then the virtual ip address of the destination node is returned into the client.By
This is as it can be seen that in the embodiment of the present application, when client initiates the domain name mapping request to target domain name, CPU can be used
Rate is minimum and provides the virtual ip address of the node of a network service return client, so that client can use the section
Point handles corresponding business, due to client return be the smallest node of CPU usage virtual ip address, i.e., at business
Manage the virtual ip address of the smallest node of pressure, therefore, to a certain extent can balanced each node service processing pressure.
For convenience of understanding, the application scenarios of the application are introduced first, referring to Fig. 1, which is the embodiment of the present application
A kind of exemplary application schematic diagram of a scenario provided.
Load balancing cluster 100 shown in fig. 1, including 3 nodes, respectively node 101, node 102 and node 103.
Node 101, node 102 and node 103 can have identical traffic handing capacity, can share identical database.Node
101, node 102 can be connected with node 103 by network such as local area network.Its in node 101, node 102 and node 103
In a node or multiple nodes can be used as load balancer, receive the domain name mapping request of client, and to client
Return to the virtual ip address of corresponding node such as node 101.
It should be noted that, although include 3 nodes in load balancing cluster shown in fig. 1, but the side of being intended merely to Fig. 1
Just understand and show, do not constitute the restriction to the embodiment of the present application.
With reference to the accompanying drawing, the various non-limiting embodiments of the application are described in detail.
Illustrative methods
Referring to fig. 2, which is a kind of flow diagram of domain name analytic method provided by the embodiments of the present application.
In the present embodiment, the method can be executed by the load balancer in load balancing cluster, and the load is equal
Weighing apparatus can be the node in the load balancing cluster, for example, the load balancer can be 3 nodes described in Fig. 1
In any one or multiple nodes.That is, domain name analytic method provided by the embodiments of the present application, it can be equal by loading
Node in weighing apparatus cluster executes.
Domain name analytic method can for example be realized by following steps S201-S203.
S201: it receives the domain name mapping for target domain name that client is sent and requests.
S202:, will according to the corresponding relationship of the alternate node mark and the CPU usage of the alternate node that pre-save
The minimum alternate node of CPU usage is determined as destination node.
In the embodiment of the present application, the alternate node is any one in multiple nodes corresponding with the target domain name
A node.It is understood that the corresponding multiple nodes of target domain name described in domain can have identical service processing function.
In the embodiment of the present application, the alternate node mark is for identifying the alternate node, and the embodiment of the present application is not
The alternate node mark is specifically limited, the alternate node mark for example can be the physical address of the alternate node.
In the embodiment of the present application, the corresponding relationship of the alternate node mark and the CPU usage of the alternate node,
It such as can be corresponding relationship as shown in table 1 below.
Table 1
It should be noted that table 1 is exemplary illustration, the restriction to the embodiment of the present application is not constituted.
In view of the CPU usage of node characterizes the service processing pressure of node to a certain extent, therefore, CPU makes
It may be considered the smallest alternate node of current business processing pressure with the smallest alternate node of rate, therefore, implement in the application
In example, the destination node that the smallest alternate node of current business processing pressure can be accessed as active client.
S203: if the destination node has virtual ip address, the virtual ip address of the destination node is returned to
The client.
It is understood that in practical applications, alternate node is not any time all to provide network service, if alternative section
Point does not provide network service, then alternate node can not be client process business.And provide the alternate node tool of network service
There is virtual ip address, the alternate node for not providing network service does not have virtual ip address.Therefore, in the embodiment of the present application,
After determining destination node, if destination node has virtual ip address, the virtual ip address of the destination node is returned to
The client.
Specifically, judge whether destination node has virtual ip address, it can be according to alternate node mark and alternate node
Virtual ip address between corresponding relationship, determine whether the destination node marking has virtual ip address.For example, can tie
Conjunction table 2 is understood that table 2 shows the corresponding pass between alternate node mark provided by the embodiments of the present application and virtual ip address
System.
Table 2
| Alternate node mark | The virtual ip address of alternate node |
| MAC address 1 | VIP 1 |
| MAC address 2 | VIP 2 |
| MAC address 3 | |
| MAC address 4 | VIP 3 |
From table 2 it can be seen that the alternate node mark corresponding virtual ip address of MAC address 3 is sky, then it represents that standby
It selects the corresponding alternate node of node identification MAC address 3 not have virtual ip address, indicates that alternate node identifies MAC
The corresponding alternate node of address 3 does not provide network service.And other three nodes all have virtual ip address, can mention
For network service.
It should be noted that table 2 is exemplary illustration, although there is no virtual ip address to indicate in table 2 with sky,
In practical application, can also use other way, such as with " 0 " indicate etc., the embodiment of the present application is not specifically limited.
As can be seen from the above description, domain name analytic method provided by the embodiments of the present application is initiated in client to aiming field
When the domain name mapping request of name, can the virtual ip address of node CPU usage is minimum and that network service is provided return
Client, so that client can use the corresponding business of the node processing, since what is returned to client is CPU usage
The virtual ip address of the smallest node, therefore, to a certain extent can balanced each node service processing pressure.
It is understood that in practical applications, the strategy of load balancing has very much, such as polling schemas, connection number plan
Slightly etc..In the embodiment of the present application, will be " true according to CPU usage using CPU usage as the reference index of load balancing
Be set to the node of client process business " balance policy, referred to as CPU usage balance policy.In the embodiment of the present application, if
The load balancing for determining target domain name is CPU usage balance policy, then the load balancing that can modify target domain name is matched
File is set, balanced type therein is revised as CPU usage.
Correspondingly, in the embodiment of the present application, after S201, can also judge that the corresponding load of the target domain name is equal
Whether the strategy that weighs is CPU usage balance policy, if so, executing S202 and subsequent step again.That is S202 is in specific implementation
It can be with are as follows: if the load balancing of the target domain name is CPU usage balance policy, according to the alternate node pre-saved
The corresponding relationship of mark and the CPU usage of the alternate node, is determined as target section for the minimum alternate node of CPU usage
Point.
It in the embodiment of the present application, can be by the load balancing configuration file of the reading target domain name, to determine
Whether the load balancing for stating target domain name is CPU usage balance policy.
It is above mentioned in S202, it is pre- that alternate node, which is identified with the corresponding relationship of the CPU usage of the alternate node,
First save.In a kind of implementation of the embodiment of the present application, the CPU of the available alternate node of load balancer makes
With the corresponding relationship for hastily saving the alternate node mark and the CPU usage of the alternate node afterwards.
As above, the load balancer can be the node in multiple nodes, therefore in the embodiment of the present application, except negative
Itself the available CPU usage of alternate node except balanced device is carried, the CPU usage is then sent to load balancing
Device.Load balancer obtains the CPU usage of itself.So, it is corresponding each to can be reserved for aiming field name for load balancer
The corresponding relationship of a node identification and corresponding CPU usage.For example, being understood in conjunction with Fig. 1, Fig. 1 interior joint 101 is load
Balanced device, then the CPU usage that node 101 can receive the CPU usage of the transmission of node 102 and node 103 is sent, and obtain
The CPU usage of itself, to save the corresponding relationship between these three node identifications and the CPU usage of these three nodes.
Specifically, in the embodiment of the present application, node obtain the CPU usage of itself mode it is as follows:
Firstly, by node itself /proc/stat file continuously acquires the cpu performances of two enough short time intervals
Data, and respectively from the first row of/proc/stat file parse to obtain user, nice, system, idle, iowait, irq,
9 elements of softirq, stealstolen, guest.
Wherein, user indicates to be accumulated to current time since system starting, and the runing time in User space does not include
Nice value is negative process；
Nice indicates to be accumulated to current time, the process that nice value is negative occupied CPU time since system starting；
System expression is accumulated to current time since system starting, the runing time in kernel mode；
Idle expression is accumulated to current time since system starting, other waiting time in addition to I/O latency；
Iowait indicates to be accumulated to current time, I/O latency since system starting；
Irq indicates to be accumulated to current time, hard break time since system starting；
Softirq indicates to be accumulated to current time, traps time since system starting
Stealstolen indicates the time spent in other operating systems when running in virtual environment；
Guest indicates the time for running virtual cpu for client operating system under linux kernel control.
Secondly, the cpu performance data for respectively obtaining double sampling is added, successively respectively T1, T2, calculate total CPU
Timeslice totle_time=T2-T1.
Then, total free time idle=T2_idle-T1_idle is calculated.
Finally, calculating cpu utilization rate pcpu, formula is as follows:
Pcpu=100* (totle_time-idle)/totle_time.
Example devices
Based on the domain name analytic method that above embodiments provide, the embodiment of the present application also provides a kind of domain name mapping dresses
It sets, introduces the device below in conjunction with attached drawing.
Referring to Fig. 3, which is a kind of structural schematic diagram of domain name mapping device provided by the embodiments of the present application.
Described device 300 can for example specifically include: receiving unit 310, determination unit 320 and return unit 330.
Receiving unit 310, the domain name mapping for target domain name for receiving client transmission are requested；
Determination unit 320, for according to the alternate node mark and the CPU usage of the alternate node pre-saved
The minimum alternate node of CPU usage is determined as destination node by corresponding relationship；Wherein, the alternate node is and the mesh
Mark any one node in the corresponding multiple nodes of domain name；
Return unit 330, if there is virtual ip address for the destination node, by the virtual IP address of the destination node
Address returns to the client.
Optionally, the return unit 330, is specifically used for:
According to the corresponding relationship between alternate node mark and the virtual ip address of alternate node, the destination node is determined
It identifies whether with virtual ip address；
If it is, the virtual ip address of the destination node is returned to the client.
Optionally, described device 300 further include:
Acquiring unit, for obtaining the CPU usage of the alternate node；
Storage unit saves the corresponding relationship of the alternate node mark and the CPU usage of the alternate node.
Optionally, the determination unit 320, is specifically used for:
If the load balancing of the target domain name is CPU usage balance policy, according to the alternative section pre-saved
The corresponding relationship of the CPU usage of point identification and the alternate node, is determined as target for the minimum alternate node of CPU usage
Node.
Optionally, the alternate node mark, comprising:
The physical address of the alternate node.
Since described device 300 is device corresponding with the domain name analytic method of above method embodiment offer, the dress
The specific implementation of each unit set, the domain name analytic method provided with above method embodiment is same design, therefore, is closed
In the specific implementation of each unit of described device, the description section of above method embodiment can be referred to, details are not described herein again.
A kind of domain name mapping device provided by the embodiments of the present application, described device can for example specifically include: receiving unit,
Determination unit and return unit.Receiving unit, the domain name mapping for target domain name for receiving client transmission are requested；Really
Order member will for the corresponding relationship according to the alternate node mark and the CPU usage of the alternate node that pre-save
The minimum alternate node of CPU usage is determined as destination node；Wherein, the alternate node is corresponding with the target domain name
Any one node in multiple nodes；Return unit, if there is virtual ip address for the destination node, by the mesh
The virtual ip address of mark node returns to the client.It can be seen that in the embodiment of the present application, initiating in client to mesh
When marking the domain name mapping request of domain name, can the virtual ip address of node CPU usage is minimum and that network service is provided return
A client is returned, so that client can use the corresponding business of the node processing, since what is returned to client is that CPU makes
With the virtual ip address of the smallest node of rate, therefore, to a certain extent can balanced each node service processing pressure.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the application
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the application, these modifications, purposes or
Person's adaptive change follows the general principle of the application and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are by following
Claim is pointed out.
It should be understood that the application is not limited to the precise structure that has been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.Scope of the present application is only limited by the accompanying claims
The foregoing is merely the preferred embodiments of the application, not to limit the application, it is all in spirit herein and
Within principle, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this application.
Claims (10)
1. a kind of domain name analytic method, which is characterized in that the described method includes:
The domain name mapping for target domain name that client is sent is received to request；
According to the corresponding relationship of the alternate node mark and the CPU usage of the alternate node that pre-save, by CPU usage
Minimum alternate node is determined as destination node；Wherein, the alternate node is multiple nodes corresponding with the target domain name
In any one node；
If the destination node has virtual ip address, the virtual ip address of the destination node is returned into the client
End.
If 2. the method according to claim 1, wherein the destination node have virtual ip address,
The virtual ip address of the destination node is returned into the client, comprising:
According to the corresponding relationship between alternate node mark and the virtual ip address of alternate node, the destination node marking is determined
Whether there is virtual ip address；
If it is, the virtual ip address of the destination node is returned to the client.
3. the method according to claim 1, wherein the method also includes:
Obtain the CPU usage of the alternate node；
Save the corresponding relationship of the alternate node mark and the CPU usage of the alternate node.
4. the method according to claim 1, wherein the basis pre-save alternate node mark with it is described
The minimum alternate node of CPU usage is determined as destination node by the corresponding relationship of the CPU usage of alternate node, comprising:
If the load balancing of the target domain name is CPU usage balance policy, according to the alternate node mark pre-saved
Know the corresponding relationship with the CPU usage of the alternate node, the minimum alternate node of CPU usage is determined as target section
Point.
5. -4 any one the method according to claim 1, which is characterized in that the alternate node mark, comprising:
The physical address of the alternate node.
6. a kind of domain name mapping device, which is characterized in that described device includes:
Receiving unit, the domain name mapping for target domain name for receiving client transmission are requested；
Determination unit, for being closed according to the alternate node mark pre-saved is corresponding with the CPU usage of the alternate node
System, is determined as destination node for the minimum alternate node of CPU usage；Wherein, the alternate node is and the target domain name
Any one node in corresponding multiple nodes；
Return unit returns the virtual ip address of the destination node if having virtual ip address for the destination node
Back to the client.
7. device according to claim 6, which is characterized in that the return unit is specifically used for:
According to the corresponding relationship between alternate node mark and the virtual ip address of alternate node, the destination node marking is determined
Whether there is virtual ip address；
If it is, the virtual ip address of the destination node is returned to the client.
8. device according to claim 6, which is characterized in that described device further include:
Acquiring unit, for obtaining the CPU usage of the alternate node；
Storage unit saves the corresponding relationship of the alternate node mark and the CPU usage of the alternate node.
9. device according to claim 6, which is characterized in that the determination unit is specifically used for:
If the load balancing of the target domain name is CPU usage balance policy, according to the alternate node mark pre-saved
Know the corresponding relationship with the CPU usage of the alternate node, the minimum alternate node of CPU usage is determined as target section
Point.
10. according to claim 6-9 any one described device, which is characterized in that the alternate node mark, comprising:
The physical address of the alternate node.
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