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Using MySQL and memcached with Ruby

There are a number of different modules for interfacing to memcached within Ruby.

The Ruby-

MemCache Client library provides a native interface to memcached that does not require any external

libraries, such as libmemcached. You can obtain the installer packagefrom

http://www.deveiate.org/

projects/RMemCache.

To install, extract the package and then run install. rb:

shell> install. rb

If you have RubyGems, you can install the Ruby-MemCache gem: shell> gem install Ruby-MemCache

Bulk updating Gem source index for: http://gems.rubyforge.org Install reąuired dependency io-reactor? [Yn] y Successfully installed Ruby-MemCache-O.0.1 Successfully installed io-reactor-O.05 Installing ri documentation for io-reactor-O.05...

Installing RDoc documentation for io-reactor-O.05...

To use a memcached instance from within Ruby, create a new instance of the MemCache object. reąuire 'memcache’

memc = MemCache::new '192.168.0.100:11211'

You can add a weight to each server to increase the likelihood of the server being selected during

hashing by appending the weight count to the server host name/port string:

reąuire 'memcache'

memc - MemCache::new '192.168.0.100:11211:3'

To add servers to an existing list, you can append them directly to the MemCache object:

memc +- ("192.168.0.101:11211"]

To set data into the cache, you can just assign a value to a key within the newcache object, which

works just like a standard Ruby hash object:

memc("key"] - "value"