Hi,
We have recently implemented memcached into one of our high availability web application. It's working great! Now that it's working properly, I would like to improve upon it's infrastructure. I
would like to have a secondary server at a completely different service provider, for load balancing and failover purposes.

My question is: Is there a way to mirror a memcached server such that everything contained in one memcached server is contained in another, in almost real time?

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J. Jeyaseelan
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MySQL query caching is less than ideal, for a number of reasons:

* MySQL's query cache destroys the entire cache for a given table whenever that table is changed. On a high-traffic site with updates happening many times per second, this makes the the cache practically worthless. In fact, it's often harmful to have it on, since there's a overhead to maintain the cache.
* On 32-bit architectures, the entire server (including the query cache) is limited to a 4 GB virtual address space. memcached lets you run as many processes as you want, so you have no limit on memory cache size.
* MySQL has a query cache, not an object cache. If your objects require extra expensive construction after the data retrieval step, MySQL's query cache can't help you there.

If the data you need to cache is small and you do infrequent updates, MySQL's query caching should work for you. If not, use memcached.

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J. Jeyaseelan
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Hi jeyaseelansarc,

I am new to above enter the topic.So, please explain or sample example.

how to implement for Memcached Replication?

please Give the your valuable post.

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Regards,
Senraj.A

Hi senraj,
Memcached Replication is the process of having master and slave servers. But i think it is not possible with memcached. Better we have to do this with mysql replication for memcached

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J. Jeyaseelan
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Hi Jeyaseelansarc,

thank you for your reply.now i am understand the memcached Replication.but

why you say it's not possible with memcache?

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Regards,
Senraj.A

Memcached Replication is the process of having master and slave servers. I can say that there is minimum possibility to have this replication with memcache as a file.

I am still searching for this...

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J. Jeyaseelan
Everything Possible