Wireless Modem Router: How to solve the problem of web server traffic overload?

How to solve the problem of web server traffic overload?
Web application server cluster systems that run by a group of the same composition of a web application server cluster system, in the outside world seem like a server. In order to load-balanced, cluster servers to achieve the purpose of optimizing system performance, cluster server a large number of access request, distributed to the system in the different nodes for processing. Therefore, I need to know the measures to solve the problem of web server traffic overload, or at least what features web servers must have to avoid problem like these.
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#2
Old 16-02-2010
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Calculate the amount of WEB server load of two methods
Web application server clustering system is run by a group of web application server with a cluster system composed of, in the outside world seems like a server. In order to load-balanced, cluster servers to achieve the purpose of optimizing system performance, cluster server a large number of access request, distributed to the system in the different nodes for processing. In order to achieve higher efficiency and stability, and this is also Web-based enterprise applications must have features.
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Old 16-02-2010
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Re: How to solve the problem of web server traffic overload?
High-reliability systems can be viewed as a redundant configuration. For a specific request, if the application server cannot be processed, then the other server cannot is right of the effective handling it? For an efficient system, if a Web server, if it fails, the other server can immediately replace it with the location of the request to the requested processing, and this process for users, to be transparent as possible, allowing users to notice the too!
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Old 16-02-2010
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Determine the stability of the application
Determine the stability of the application can support the growing number of user requests, it is the application itself an ability. Stability of the many factors that affect system performance, an effective means of measurement, including the cluster system can support, while the maximum number of users accessing the system and dealing with the time required for a request.
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Old 16-02-2010
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Re: How to solve the problem of web server traffic overload?
Consistency between the servers does not support. Consistency is the server load-balancing system should possess the ability, through it; the system can belong to server-side session information, or the underlying database level, then the user's request for the corresponding server-oriented. The rotation scheduling DNS not have such intelligent features. It is through cookie, hidden fields, URL rewriting in one of three ways to carry out similar judgments. When a user signs through the above text-based approach to establish a connection with the server, after all of its follow-up visits are connected to the same server. The problem is that the server's IP is the browser temporarily stored in the cache, once the record date, you need to re-establish the connection, then the same user's request is likely to be a different server for processing, then all of the previous session information will be lost.
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#6
Old 16-02-2010
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Re: How to solve the problem of web server traffic overload?
Imagine a cluster with N nodes. If one node destruction, then all requests for access to the node will not respond, it is not anyone wants to see. The router can be more advanced at intervals of a certain time interval, the node checks, if there is destruction of the nodes, it will remove it from the list of ways to solve this problem. However, because of the Internet on, ISPs will be stored in a large number of DNS cache in order to save access time, therefore, DNS updates will become very slow, so some users may be visiting a number of sites that no longer exists or lack of access to a number of new sites. So, even though DNS rotation schedule to a certain extent, solve the load balancing problems, but this situation is not very optimistic about the change and effective.
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