Sessions are not a must for every web app. In fact, you can replace state maintenance (Sessions) with State ‘Transfers’ (REST).  RESTFul calls provide the entire client state for each call. This is actually a good thing – as far as the server is concerned. No longer does the server need to store millions and millions of session objects. This improves scalability on the server app.

REDIS – An alternative to session storage in the database

Redis is an open source key-value cache and storage system, also referred to as a data structure server due to its advanced support for several data types, such as hashes, lists, sets, and bitmaps, amongst others. It also supports clustering, making it useful in highly-available and scalable environments.

BTrees

A B-tree is a tree data structure that keeps data sorted and allows searches, insertions, and deletions in logarithmic time.   It is optimized for systems that read and write large blocks of data ( databases and file systems).

See this post on how twitter leveraged Redis to implement a BTRee…

Anuj holds professional certifications in Google Cloud, AWS as well as certifications in Docker and App Performance Tools such as New Relic. He specializes in Cloud Security, Data Encryption and Container Technologies.

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Anuj Varma – who has written posts on Anuj Varma, Hands-On Technology Architect, Clean Air Activist.

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