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What is the right way to implement publish/subscribe on top of eredis?

I tried sending a 'subscribe' command, and it works fine, but I can't call eredis_r_reply() in a blocking manner to wait for a response that hasn't come yet.

hello,
we can read in ReadMe :
/* release a reader */
r = eredis_r_release( e );

e or reader ?

Regards,
Nicolas

e = eredis_new();
eredis_timeout( e, 200 );
eredis_r_max( e, 50 );
eredis_r_retry( e, 1 );

eredis_host_add( e, "127.0.0.1", 6379 );

eredis_pc_cmd( e, "AUTH passwd" );
eredis_pc_cmd( e, "SELECT 1");
eredis_run_thr( e );
eredis_w_cmd( e, "SET testkey 10" );

With this snippet (I trimmed variable declarations, by the way) I am able to connect redis-server as I checked via connection tools and also by redis itself. However, testkey does not SET. The most interesting thing is, sometimes (randomly) I see that this teskey declared successfully without reason. Like redis get the key but do some delay. However, this is not simply a delay. It happens randomly. After few minutes maybe that key will be set.

Is there any reason to have such behavior on my end? Redis server is v4.

I can't seem to find anywhere to get stable packaged releases for eredis anywhere (either in Debian's repositories or here in the GitHub releases tab). Am I merely blind or are users supposed to simply use master from source? :)

Before using eredis for multi thread operation, we are using hiredis.
however, as the issue : redis/hiredis#306 ,
we need to use the hiredis timeout branch : https://github.com/redis/hiredis/tree/with-timeout
to avoid redis command pending.

How can we do, we eredis, our first tests seems to show us the same problem, sometime , redis command blocks and not release.

Regards,
Nicolas Prochazka

eredis client is sometimes returning "NOAUTH Authentication required" error even after setting auth via AUTH command. To be clear, some commands appear to succeed before the error returns. Anyone has any explanation?

Hello!

[root@gerasim eredis]# make
[ 20%] Built target hiredis-inc
[ 40%] Built target hiredis-src
[ 50%] Building C object src/CMakeFiles/eredis.dir/eredis.c.o
/tmp/c/redis/eredis/src/eredis.c:202: error: redefinition of typedef ‘eredis_reader_t’
/tmp/c/redis/eredis/include/eredis.h:59: note: previous declaration of ‘eredis_reader_t’ was here
/tmp/c/redis/eredis/src/eredis.c:238: error: redefinition of typedef ‘eredis_t’
/tmp/c/redis/eredis/include/eredis.h:58: note: previous declaration of ‘eredis_t’ was here
make[2]: *** [src/CMakeFiles/eredis.dir/eredis.c.o] Error 1
make[1]: *** [src/CMakeFiles/eredis.dir/all] Error 2
make: *** [all] Error 2

Please tell how it can be compiled? Or i'm doing something wrong?

Does it work on windows ?

hello,
it seems eredis_host_file( e, "my-hosts.conf" ) does not work for ipv6 , parsing : seems bad ,
can you correct ?

Regards,
Nicolas Prochazka

Hello,
when i do a eredis_r_cmd , with a redis get , that 's sending a big payload , ~ 8Mb , my progam segfault at eredis_r_cmd ( i cannot test the eredis_r_cmd reply ) , do you have some static buffer ? or hiredis ?

Regards,
Nicolas

I am doing a variable number of eredis_r_append_cmd() and a final reply=eredis_r_cmd().

When checking replies with reply = eredis_r_reply( r ), I have no idea how many commands were issued (I could count, but eredis through r->cmds_replied already knows this). Fortunately reply==NULL when no more replies are available, so I can just iterate through the replies. Unfortunately it prints out an error message. Is getting to the end of replies really an error? Is there something else I'm missing?

I'd just do the same check in my code for (r->cmds_replied >= r->cmds_nb), but apparently that is not available outside the API.

From rw.c:

if (r->cmds_replied >= r->cmds_nb) {
    fprintf(stderr,
            "eredis: api misuse: all cmds are already replied: %d/%d\n",
            r->cmds_replied, r->cmds_nb);
    return NULL;
}

Is it possible to use it for Pub/Sub Async?

haven't found a way to do it, or should I use directly Hiredis with redisAsyncContext?

tried some examples but no luck

OS:CentOS release 6.9
when I type

cmake .

output:

-- Could NOT find libev (missing: LIBEV_INCLUDE_DIR LIBEV_LIBRARY)
CMake Error at src/CMakeLists.txt:90 (MESSAGE):
Could not find required package libev

I install "libev-devel.x86_64" , then "cmake ." again
output:

-- Could NOT find libev (missing: LIBEV_INCLUDE_DIR)
CMake Error at src/CMakeLists.txt:90 (MESSAGE):
Could not find required package libev

I check the "CMakeError.log", find

/usr/bin/ld: cannot find -lpthreads
collect2: ld returned 1 exit status

which step I do was wrong, and what should I do to resolve the problem.
Thanks!

Hi,

Is there any support for Redis Cluster implemented in this client?

Thanks

Merci pour cette release @guillaumef!

Eredis sera partagé dans notre prochaine RedisWeekly demain matin dans le numéro #139

Can you put some examples ?
Is eredis_reply_free must be use with simple eredis_r_cmd ?
How count reader ( thread ?) that opens in pool connection ?

Regards,
Nicolas Prochazka