February 2018
Intermediate to advanced
382 pages
11h 33m
English
In a modern website architecture, there are multiple web servers behind one or more load balancers. Sessions usually need to be stored in external storage systems. If any of the web servers go down, another server can retrieve the sessions from the external storage and continue to serve traffic. Redis is a perfect session store because it has very low access latency compared to a RDBMS. Also, key expiration support in Redis can be naturally adopted for session timeout management.
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