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How Discord Stores Billions of Messages

Discord continues to grow faster than we expected and so does our user-generated content. With more users comes more chat messages. In July, we announced 40 million messages a day… 76 more words

Programming

Reindexing Data with Elasticsearch

Sooner or later, you’ll run into a problem of reindexing the data of your Elasticsearch instances. When we do Elasticsearch consulting for clients we always look at whether they have some way to efficiently reindex previously indexed data. 144 more words

Programming

Caching at Reddit

Performance matters. One of the first tools we as developers reach for when looking to get more performance out of a system is caching. As Reddit has grown in users and… 158 more words

Programming

Property Level Security with Neo4j Enterprise

In Neo4j 3.1 Enterprise edition, we introduced the first wave of security features that are coming down the pipeline. Now you can start off with Administrators, Architects, Publishers and Readers as built in default groups. 1,312 more words

Graph Database

Implement Lucene Search in Android App - How to make it work

I created an Android app for World Health Organization long ago. I made different kinds of search engines before with full-text indexing. This time I wanted to do something different. 723 more words

Java

Getting Started with MongoDB

Introduction

MongoDB is an open-source document database that provides high performance, high availability, and automatic scaling. MongoDB obviates the need for an Object Relational Mapping (ORM) to facilitate development. 401 more words

Database