guile-redis is a Guile module for the Redis key-value data store. It provides all commands up to Redis 5.0 and supports multiple commands and pipelining.
Download the latest tarball and untar it:
If you are cloning the repository make sure you run this first:
$ autoreconf -vif
Then, run the typical sequence:
$ ./configure --prefix=<guile-prefix> $ make $ sudo make install
Where <guile-prefix> should preferably be the same as your system Guile installation directory (e.g. /usr).
If everything installed successfully you should be up and running:
$ guile scheme@(guile-user)> (use-modules (redis)) scheme@(guile-user)>
It might be that you installed guile-redis somewhere differently than your system’s Guile. If so, you need to indicate Guile where to find guile-redis, for example:
$ GUILE_LOAD_PATH=/usr/local/share/guile/site guile
The main interface to the Redis server is really simply. It consists on three procedures, the most important one being redis-send which basically sends commands to the server.
- (redis-connect #:key host port) : Establish a connection to the
redis server at the given host and port and return a Redis
- host : it defaults to 127.0.0.1.
- port : it defaults to 6379.
- (redis-close connection) : Close the connection to the Redis server.
- (redis-send connection commands) : Send the given list of
commands to the Redis connection. commands can be a single
command or a list of commands. For a list of commands, a list of all
the replies is returned.
Returns : A reply or a list of replies if a list of commands was sent.
- redis-error : if the Redis server returns an error. The exception has the error string as an argument.
- redis-invalid : if the user arguments or server’s answer cannot be parsed (hopefully, this is unlikely to happen).
All commands in guile-redis are defined with lower-case and hyphenated in the case of commands that have two or more words. For example, the command ”CLIENT LIST” is defined as client-list.
The commands take exaclty the same arguments as defined in the Redis manual and all the arguments (if any) need to be passed as a single list. For example:
(bitfield '(mykey INCRBY i5 100 1 GET u4 0))
Note that, internally, guile-redis will automatically convert symbols and numbers to strings before sending the command to Redis.
- Load the module:
> (use-modules (redis))
- Create a connection:
> (define conn (redis-connect))
- Send a single PING command:
> (redis-send conn (ping)) "PONG"
- Send a couple of PING commands:
> (redis-send conn (list (ping) (ping '("hello from guile-redis")))) ("PONG" "hello from guile-redis")
- Set a couple of keys:
> (redis-send conn (mset '(hello "world" foo "bar"))) "OK"
- Retrieve the keys just set below:
> (redis-send conn (mget '(hello foo))) ("world" "bar")
- Finally, close the connection:
> (redis-close conn)
Copyright (C) 2013-2018 Aleix Conchillo Flaque <firstname.lastname@example.org>
This file is part of guile-redis.
guile-redis is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.
guile-redis is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with guile-redis. If not, see https://www.gnu.org/licenses/.