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HAProxy - Load balancer
aae1810b4d
In order to create multiple receivers for one multi-group shard, we'll need some more info about the shard. Here we store: - the number of groups (= number of receivers) - the number of threads (will be used for accept LB) - pointer to the reference rx (to get the FD and to find all threads) - pointers to the other members (to iterate over all threads) For now since there's only one group per shard it remains simple. The listener deletion code already takes care of removing the current member from its shards list and moving others' reference to the last one if it was their reference (so as to avoid o(n^2) updates during ordered deletes). Since the vast majority of setups will not use multi-group shards, we try to save memory usage by only allocating the shard_info when it is needed, so the principle here is that a receiver shard_info==NULL is alone and doesn't share its socket with another group. Various approaches were considered and tests show that the management of the listeners during boot makes it easier to just attach to or detach from a shard_info and automatically allocate it if it does not exist, which is what is being done here. For now the attach code is not called, but detach is already called on delete. |
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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)