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nosql
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Technology Migration: How to Change Database on the Live Website
Have no fear of moving into the unknown. Let’s start with the main spoiler: we sped up the app loading time by ~80 times. We achieved this through a comprehensive migration from Firebase Realtime Database to PostgreSQL,…
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MongoDB java driver. The custom builder for update operations.
Java driver for MongoDB does not provide any utility classes that could help with building update queries. If you want to create a query to update or increment field values, you usually have to use BasicDBObjectBuilder. This…
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Lightweight fast persistent queue in Java using Berkley DB
Recently I had a task to develop the application which will have large work queue and which need to survive the restarts. The application need to be lightweight. After trying several different persistent engines for Java I”ve…
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Fixing support of replica set by Grails mongo plugin
If you are going to use mongodb for production grails application you might stuck with the issue that replica set is really not supported by current version 1.0.0.M1 of mongodb plugin. It is quite surprising because mongo…
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