Earlier in realtime, any request for data from the server makes the app slow, unscalable and cumbersome to maintain. RethinkDB mainly focus on this drawback and makes building realtime apps easier. RethinkDB is the first open-source, scalable JSON database built for realtime web. The developer can tell RethinkDB to continuously push updated query results to application in realtime; this reduces the server load and also the time and effort necessary to build scalable realtime apps. Here there is complete steps for installing RethinkDB. This post also explains you to create a reat-time web application using RethinkDB and Node.js
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