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Memcached: How does Memcached compare with CDNs?

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The concepts of the two seem very similar. How do the two compare and contrast? In simple terms, what applications are best for each?

posted Jun 13, 2014 by Mithun Kumar Muddan

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1 Answer

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Both are different and serves different needs -
memcached is a caching tool which run on the local machine (i.e. server) stores the DB queries or small files so that frequent DB access can be avoided.

Whereas CDN i.e. Content Delivery Networks caches web content/images/css/js on a global scale to provide latency and load improvements.

For a better delivery both are required as serves different purpose. Let me know if still has some doubt.

answer Jun 13, 2014 by Salil Agrawal
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Cannot store values into memcache-PHP

When I'm running PHP+memcache, I cannot store values into memcache. My PHP version is 5.4.12 and memcache version is 3.0.8

I am setting ini_set('display_errors', true); and error_reporting(E_ALL); and getting the notice:

Notice: MemcachePool::set(): Server 127.0.0.1 (tcp 11211, udp 0) failed
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and when I try to use the "telnet 127.0.0.1 11211". It show like this:

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Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
stats

there's no any response... Does anyone have any idea...

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