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SAS/IntrNet 9.2: Application Dispatcher

Choosing a Service Type

A service can be a socket, pool, or launch service. The features, advantages, and disadvantages of each of these service types is discussed below.

Socket Services

Socket services consist of one or more Application Servers that run continuously, servicing client requests. Socket services are generally started whenever a machine is restarted (either manually or by an operating environment mechanism for starting processes at boot or login time). The service usually runs until the machine is shut down. Socket services are relatively simple to configure and manage and are adequate for most applications.

Advantages

Disadvantages

Pool Services

Pool services consist of a pool of Application Servers shared by clients. Based on system loading the servers are started and stopped by the Application Load Manager. Numerous options are provided to fine-tune the operation of a pool service. Pool services combine some of the advantages of socket and launch services.

Advantages

Disadvantages

Launch Services

A launch service starts a new Application Server for each client request. An existing server is reused only for applications that use sessions or the _TMPCAT catalog for IDS output. Most of the features of launch services are better provided by pool services. Launch services are not generally recommended for new installations.

Advantages

Disadvantages

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