Comments on: Introducing merle : an Erlang memcached client.

By: joe

joe — Tue, 11 Aug 2009 23:28:17 +0000

Looks like you are probably having issues marshaling the data from memcached. In other words PHP doesn’t know how to read Erlang tuple. You may want to contact the fork author and see how he was doing it. I think he was using python though.

By: Francesco

Francesco — Mon, 10 Aug 2009 08:12:20 +0000

I now just tried something like this :

merle:set(“coda1″, {raw, randomatom, “prova stringa di prova”}).

And it correctly inserts data. If I do a merle:getkey it works. But if I try to read that key from php I only get a false in return.

Guess I’ll have to abandon the idea of using ejabberd

By: Francesco

Francesco — Mon, 10 Aug 2009 08:03:36 +0000

I tried that, but I get this error :

** Generic server {local,merle} terminating
** Last message in was {set,{“coda1″,”6049″,”0″,
{raw,”stringa di prova da non serializzare”}}}
** When Server state == #Port
** Reason for termination ==
** {badarg,[{erlang,size,["stringa di prova da non serializzare"]},
{merle,handle_call,3},
{gen_server2,handle_msg,7},
{proc_lib,init_p_do_apply,3}]}
** exception exit: badarg
in function size/1
called as size(“stringa di prova da non serializzare”)
in call from merle:handle_call/3
in call from gen_server2:handle_msg/7
in call from proc_lib:init_p_do_apply/3

when I try to do merle:set(Key, {raw,”stringa di prova da non serializzare”}).

If i try to do something like this merle:set(Key, {raw,Tuple}), with a tuple inside Tuple (obviously), it fails with this error :

=ERROR REPORT==== 10-Aug-2009::09:58:59 ===
** Generic server {local,merle} terminating
** Last message in was {set,{“coda1″,”6049″,”0″,
{raw,{tupla,”stringa”,123123,”numero”}}}}
** When Server state == #Port
** Reason for termination ==
** {badarg,[{merle,send_storage_cmd,3},
{merle,handle_call,3},
{gen_server2,handle_msg,7},
{proc_lib,init_p_do_apply,3}]}
** exception exit: badarg
in function merle:send_storage_cmd/3
in call from merle:handle_call/3
in call from gen_server2:handle_msg/7
in call from proc_lib:init_p_do_apply/3

By: joe

joe — Thu, 06 Aug 2009 23:35:58 +0000

Check out the handle_call for “set” you should be able to use “raw” mode. Something like this:

merle:set(Key, {raw, Value})

By: Francesco

Francesco — Thu, 06 Aug 2009 09:10:14 +0000

I checked that out Joe, but it seems to be serializing/deserializing anyway, I don’t find any difference with the first implementation I tried… where am I wrong?

By: joe

joe — Wed, 05 Aug 2009 17:01:46 +0000

Check out this fork http://github.com/dreid/merle/tree/master I think it does what you want it to.

By: Francesco

Francesco — Wed, 05 Aug 2009 13:12:22 +0000

Hi, I’m trying to use your memcache client to store data into sparrow. Storing with set seems to work fine, but if I try to get data from a php script I don’t seem to be getting anything. I suppose it is due to this
“Notes:
* Uses term_to_binary and binary_to_term to serialize/deserialize Erlang terms before sending/receiving them. This
allows for native Erlang terms to be returned from memcached but doesn’t play well using other languages after setting
values with merle or using merle to get values set by other languages.”

Is there any workaround to this? I’m not skilled in erlang tough, but I have to store into memcache messages coming through ejabberd

By: Carlos

Carlos — Sun, 07 Jun 2009 10:34:03 +0000

Hi Joe! I would like to share with you the early implementation of a libmemcached wrapper for Erlang I’ve just published in Google Code. Any ideas to improve it are welcome!

By: developers.hover.in » Somethings to rejoice about

developers.hover.in » Somethings to rejoice about — Mon, 18 May 2009 08:25:16 +0000

[...] of fixed size , but we’d love to spruce things up with perhaps squid servers, memcached , merle , or a distributed key-value store [...]

By: eugen32

eugen32 — Fri, 16 Jan 2009 21:57:11 +0000

code is bearable. music sucks.