Hello!
On Thu, 11 Oct 2007, Shaun McQuaker wrote:
I'm having a particularly weird memcached problem. I am using memecached
1.2.1 across 5 servers and the Perl client API version 1.24. For the sake of
simplicity in describing my problem I'm going to break my servers into two
groups, the first called group A with 3 servers, and the second group B with
2 servers. My problem goes something link this; a server in group A adds a
value into its own cache (so the server parameter is localhost:9999) with a
perl call like this: $memd->set($key, $value, 60*60*24*30). Then a server
from group B attempts to read this value using $memd->get($key) from the
server in group A. The problem is that output is completely garbled and
looks like it's compressed. The value should indeed be compressed as it is
larger than the compression threshold that I have set. So it looks to me like
the client on the server in group B could not uncompress the value. One
further note, the server in group A can read and display the value correctly.
So now my questions:
1. is the value compressed by the memcached server or the client API?
Compression implemented entirely in client API code (if any).
2. what package (lib) is used for compression?
In perl it uses Compress::Zlib library.
3. anyone know how to fix this? or where to start? :)
Make sure you have Compress::Zlib installed on your servers.
Maxim Dounin
