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Since commit cc9bf2e5f "MEDIUM: cache: Change caching conditions" responses that do not have an explicit expiration time are not cached anymore. But this mechanism wrongly used the TX_CACHE_IGNORE flag instead of the TX_CACHEABLE one. The effect this had is that a cacheable response that corresponded to a request having a "Cache-Control: no-cache" for instance would not be cached. Contrary to what was said in the other commit message, the "checkcache" option should not be impacted by the use of the TX_CACHEABLE flag instead of the TX_CACHE_IGNORE one. The response is indeed considered as not cacheable if it has no expiration time, regardless of the presence of a cookie in the response. This should fix GitHub issue #2048. This patch can be backported up to branch 2.4.
The HAProxy documentation has been split into a number of different files for ease of use. Please refer to the following files depending on what you're looking for : - INSTALL for instructions on how to build and install HAProxy - BRANCHES to understand the project's life cycle and what version to use - LICENSE for the project's license - CONTRIBUTING for the process to follow to submit contributions The more detailed documentation is located into the doc/ directory : - doc/intro.txt for a quick introduction on HAProxy - doc/configuration.txt for the configuration's reference manual - doc/lua.txt for the Lua's reference manual - doc/SPOE.txt for how to use the SPOE engine - doc/network-namespaces.txt for how to use network namespaces under Linux - doc/management.txt for the management guide - doc/regression-testing.txt for how to use the regression testing suite - doc/peers.txt for the peers protocol reference - doc/coding-style.txt for how to adopt HAProxy's coding style - doc/internals for developer-specific documentation (not all up to date)