ad1e00b2ac
Implement proxy refcount for Lua proxy class. This is similar to the server class. In summary, proxy_take() is used to increment refcount when a Lua proxy is instantiated. proxy_drop() is called via Lua garbage collector. To ensure a deleted backend is released asap, hlua_check_proxy() now returns NULL if PR_FL_DELETED is set. This approach is directly dependable on Lua GC execution. As such, it probably suffers from the same limitations as the ones already described in the previous commit. With the current patch, "del backend" is not directly impacted though. However, the final proxy deinit may happen after a long period of time, which could cause memory pressure increase. One final observations regarding deinit : it is necessary to delay a BUG_ON() which checks that defaults proxies list is empty. Now this must be executed after Lua deinit (called via post_deinit_list). This should guarantee that all proxies and their defaults refcount are null.
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.