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By passing a version number to "add map/acl", it becomes possible to atomically replace maps and ACLs. The principle is that a new version number is first retrieved by calling"prepare map/acl", and this version number is used with "add map" and "add acl". Newly added entries then remain invisible to the matching mechanism but are visible in "show map/acl" when the version number is specified, or may be cleard with "clear map/acl". Finally when the insertion is complete, a "commit map/acl" command must be issued, and the version is atomically updated so that there is no intermediate state with incomplete entries.
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)