4e181a2c26
This patch is quite small but the change is really important. Thanks to the previous patch, we can use PEER_F_SYNCHED flag to know if a peer is synchronized or not. So instead of tracking last ack messages for each table to be able to restart at a given point when the peer reconnects, we decided to restart from the begining if a peer is not synchronized when a new connection is established. So, it is a huge change because, on reconnect, instead of pushing some missed updates, all local updates are pushed again. Most of time, it is not a problem because nowadays, connection are quite stable, especially because a heartbeat message is sent to keep it active. The only drawback is when a peer is restarted. In that case, we have no way to know it is synchronized because he learned table contents from it old local peer. This change is mandatory. First to replace the update tree by a mt-list and remove the update lock. Then to split this list by buckets to reduce contention.
HAProxy
HAProxy is a free, very fast and reliable reverse-proxy offering high availability, load balancing, and proxying for TCP and HTTP-based applications.
Installation
The INSTALL file describes how to build HAProxy. A list of packages is also available on the wiki.
Getting help
The discourse and the mailing-list are available for questions or configuration assistance. You can also use the slack or IRC channel. Please don't use the issue tracker for these.
The issue tracker is only for bug reports or feature requests.
Documentation
The HAProxy documentation has been split into a number of different files for ease of use. It is available in text format as well as HTML. The wiki is also meant to replace the old architecture guide.
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)
License
HAProxy is licensed under GPL 2 or any later version, the headers under LGPL 2.1. See the LICENSE file for a more detailed explanation.