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15-Dec-2019 15:55

This is great for cached Magento session data, we want this data in fast cache storage but we do not want to lose the data unlike system and full page cache data where we don’t really care if the data is lost – it will just be cached again.

Below are three example config files for the three cache types, you can configure your instances with these settings, or use the info to customise the default config files created in the /servers folder.

The hash table implementation Redis uses (see dict.c) # performs a lazy rehashing: the more operation you run into a hash table # that is rehashing, the more rehashing "steps" are performed, so if the # server is idle the rehashing is never complete and some more memory is used # by the hash table.

# # The default is to use this millisecond 10 times every second in order to # active rehashing the main dictionaries, freeing memory when possible.

Magento has a default built in cache management system that when enabled caches system data such as configuration, layouts, blocks, translations etc.

We can also use redis to create a fast Magento CE caching system for session and full page (fpc) data too.

This blog will look at how to install and configure a system, session and full page cache management solution for Magento CE v1.7.0.0 or greater using redis on Ubuntu 14.04 LTS.

There is a lot of configuration information in the default file most of it relating to options that are commented out and not required.

activerehashing yes # The client output buffer limits can be used to force disconnection of clients # that are not reading data from the server fast enough for some reason (a # common reason is that a Pub/Sub client can't consume messages as fast as the # publisher can produce them).

# # The limit can be set differently for the three different classes of clients: # # normal - # # A client is immediately disconnected once the hard limit is reached, or if # the soft limit is reached and remains reached for the specified number of # seconds (continuously).

The most important settings are the TCP port numbers used for each instance, the process id, log file name and persistence data.

Redis can be configured to automatically save (or persist) cached data to disk, this is really useful for volatile cache data, i.e. Essentially redis saves a dump of the cache data regularly to disk (in /var/lib/redis) so that if the redis instance crashes or the server is restarted the cached data is not lost.

There is a lot of configuration information in the default file most of it relating to options that are commented out and not required.activerehashing yes # The client output buffer limits can be used to force disconnection of clients # that are not reading data from the server fast enough for some reason (a # common reason is that a Pub/Sub client can't consume messages as fast as the # publisher can produce them).# # The limit can be set differently for the three different classes of clients: # # normal - # # A client is immediately disconnected once the hard limit is reached, or if # the soft limit is reached and remains reached for the specified number of # seconds (continuously).The most important settings are the TCP port numbers used for each instance, the process id, log file name and persistence data.Redis can be configured to automatically save (or persist) cached data to disk, this is really useful for volatile cache data, i.e. Essentially redis saves a dump of the cache data regularly to disk (in /var/lib/redis) so that if the redis instance crashes or the server is restarted the cached data is not lost.The special representation is only used when # you are under the following limits: list-max-ziplist-entries 512 list-max-ziplist-value 64 # Sets have a special encoding in just one case: when a set is composed # of just strings that happens to be integers in radix 10 in the range # of 64 bit signed integers.