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antirez f3fd419fc9 Support for read-only slaves. Semantical fixes.
This commit introduces support for read only slaves via redis.conf and CONFIG GET/SET commands. Also various semantical fixes are implemented here:

1) MULTI/EXEC with only read commands now work where the server is into a state where writes (or commands increasing memory usage) are not allowed. Before this patch everything inside a transaction would fail in this conditions.

2) Scripts just calling read-only commands will work against read only
slaves, when the server is out of memory, or when persistence is into an
error condition. Before the patch EVAL always failed in this condition.
2012-03-20 17:32:48 +01:00
deps lua_cmsgpack.c added 2012-02-24 15:46:25 +01:00
src Support for read-only slaves. Semantical fixes. 2012-03-20 17:32:48 +01:00
tests CLIENT LIST test modified to reflect the new output. 2012-03-13 18:06:29 +01:00
utils redis_init_script template updated. 2012-03-20 13:07:59 +01:00
.gitignore file .prerequisites added to gitignore 2011-11-21 15:35:54 +01:00
00-RELEASENOTES Removed handling of deprecated hash-max-zipmap-entries nad hash-map-zipmap-value. Pieter is too good with users ;). Better to have them switch to a saner configuration ASAP after the 2.6 upgrade. 2012-03-10 10:41:39 +01:00
BUGS Switched issues URL to Github in BUGS 2011-10-18 14:28:23 -04:00
Changelog Make log target fixed 2010-07-01 14:45:37 +02:00
CONTRIBUTING Cleaned up redis root directory and changed links for redis.io and github issues and pull requests 2011-10-18 14:14:16 -04:00
COPYING first commit 2009-03-22 10:30:00 +01:00
INSTALL INSTALL now redirects the user to README 2012-02-05 09:38:41 +01:00
Makefile top level Makefile now just a proxy. Doing make clean inside src now does a full clean including deps, not just Redis source. Thanks to Pieter for the top level Makefile proxy trick. 2011-07-13 19:15:22 +02:00
MANIFESTO Redis Manifesto moved from src to root dir 2012-02-05 09:37:08 +01:00
README Document the redis-server cli options in the README 2011-12-01 15:40:49 +01:00
redis.conf Support for read-only slaves. Semantical fixes. 2012-03-20 17:32:48 +01:00
runtest A few small BSD related fixes. 2012-02-08 22:24:59 +01:00
TODO a few entries removed from the old TODO list (done) 2011-09-27 16:07:38 +02:00

Where to find complete Redis documentation?
-------------------------------------------

This README is just a fast "quick start" document. You can find more detailed
documentation at http://redis.io

Building Redis
--------------

It is as simple as:

    % make

You can run a 32 bit Redis binary using:

    % make 32bit

After building Redis is a good idea to test it, using:

    % make test

NOTE: if after building Redis with a 32 bit target you need to rebuild it
      with a 64 bit target you need to perform a "make clean" in the root
      directory of the Redis distribution.

Allocator
---------

Selecting a non-default memory allocator when building Redis is done by setting
the `MALLOC` environment variable. Redis is compiled and linked against libc
malloc by default, with the exception of jemalloc being the default on Linux
systems. This default was picked because jemalloc has proven to have fewer
fragmentation problems than libc malloc.

To force compiling against libc malloc, use:

    % make MALLOC=libc

To compile against jemalloc on Mac OS X systems, use:

    % make MALLOC=jemalloc

Verbose build
-------------

Redis will build with a user friendly colorized output by default.
If you want to see a more verbose output use the following:

    % make V=1

Running Redis
-------------

To run Redis with the default configuration just type:

    % cd src
    % ./redis-server
    
If you want to provide your redis.conf, you have to run it using an additional
parameter (the path of the configuration file):

    % cd src
    % ./redis-server /path/to/redis.conf

It is possible to alter the Redis configuration passing parameters directly
as options using the command line. Examples:

    % ./redis-server --port 9999 --slaveof 127.0.0.1 6379
    % ./redis-server /etc/redis/6379.conf --loglevel debug

All the options in redis.conf are also supported as options using the command
line, with exactly the same name.

Playing with Redis
------------------

You can use redis-cli to play with Redis. Start a redis-server instance,
then in another terminal try the following:

    % cd src
    % ./redis-cli
    redis> ping
    PONG
    redis> set foo bar
    OK
    redis> get foo
    "bar"
    redis> incr mycounter
    (integer) 1
    redis> incr mycounter
    (integer) 2
    redis> 

You can find the list of all the available commands here:

    http://redis.io/commands

Installing Redis
-----------------

In order to install Redis binaries into /usr/local/bin just use:

    % make install

You can use "make PREFIX=/some/other/directory install" if you wish to use a
different destination.

Make install will just install binaries in your system, but will not configure
init scripts and configuration files in the appropriate place. This is not
needed if you want just to play a bit with Redis, but if you are installing
it the proper way for a production system, we have a script doing this
for Ubuntu and Debian systems:

    % cd utils
    % ./install_server

The script will ask you a few questions and will setup everything you need
to run Redis properly as a background daemon that will start again on
system reboots.

You'll be able to stop and start Redis using the script named
/etc/init.d/redis_<portnumber>, for instance /etc/init.d/redis_6379.

Enjoy!