How Does OracleAS Web Cache Work?

The first time that OracleAS Web Cache receives an HTTP or HTTPS request, it forwards the request to an HTTP server for processing. The Web cache stores the response in memory so it can respond directly to future requests. OracleAS Web Cache understands HTTP headers, including cookies, and makes caching decisions based on administrator or application-defined rules. To invalidate the cache, administrators and application developers can specify expiration policies or send HTTP or HTTPS invalidation messages to the Web Cache host machine. OracleAS Web Cache supports load balancing and failover for Oracle Application Server farms, so that cache misses are directed to the most available, highest performing origin Web server.