C and Redis

Author

Ajeet Raina, Former Developer Growth Manager at Redis

Find tutorials, examples and technical articles that will help you to develop with Redis and C.

Getting started#

In order to use Redis with C, you need a C Redis client. For your first steps with C and Redis, this article will show how to use the recommended library: hiredis.

Step 1. Install the pre-requisites#

Version 1.0.0 marks the first stable release of Hiredis. Follow the below steps to install the pre-requisite packages in order to compile the latest version of hiredis.

 brew install gcc make

Run the below command to run Redis server

 redis-server

Step 2. Install and compile hiredis#

wget https://github.com/redis/hiredis/archive/master.zip
 make
 make install

Step 3. Copy the below C code:#

 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <hiredis/hiredis.h>

 int main (int argc, char **argv) {
   redisReply *reply;
   redisContext *c;

   c = redisConnect("127.0.0.1", 6381);
   if (c->err) {
       printf("error: %s\n", c->errstr);
       return 1;
   }

   /* PINGs */
   reply = redisCommand(c,"PING %s", "Hello World");
   printf("RESPONSE: %s\n", reply->str);
   freeReplyObject(reply);

   redisFree(c);
 }

Step 4. Compile the code#

 gcc redistest.c -o redistest -I /usr/local/include/hiredis -lhiredis

Step 5. Test the code#

 ./redistest
 RESPONSE: Hello World

More C Clients Resources#

•hiredis-cluster - C client library for Redis Cluster
•libredis - A C based general low-level PHP extension and client library for Redis, focusing on performance, generality and efficient parallel communication with multiple Redis servers.
•hiredispool - Provides connection pooling and auto-reconnect for hiredis. It is also minimalistic and easy to do customization.

Last updated on Feb 22, 2024

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