Extortionists Wipe Thousands of Databases — This week’s biggest database story has been thousands of insecure MongoDB servers being held ransom by hackers.

The Many Different Ways to JOIN Tables in SQL — Perhaps the most powerful SQL feature is the JOIN operation, and this ‘probably incomplete comprehensive guide’ looks at it in depth from cross joins to partitioned outer joins and all in between.

Cachelot: Memcached-Compatible Caching Library and Server — An ‘LRU cache that works at the speed of light’ that uses a fixed pre-allocated block of memory.

[Free Tool] Network Analyzer for MySQL — VividCortex’s network traffic analyzer tool for MySQL is an easy-to-use way to gain insight into your server’s activity. Built for MySQL servers running on Linux operating systems, it is a non-intrusive, safe way to understand your query workload.

The Ransoming of Elasticsearch — A data ransoming group has attacked vulnerable clusters of Elasticsearch servers they’ve found on cloud providers.

5 Hadoop Trends to Watch in 2017 — Where will the distributed computing system go in 2017? Here are five macro trends impacting Hadoop to keep an eye out this year.

Benchmarking Redmine on MySQL with RocksDB and InnoDB Storage — RocksDB is a persistent key-value store, built by Facebook, that can be used as a storage engine in MySQL.