In MongoDB 4.0 the MongoDB community got its first chance to use transactions. Well, except for the short lived TokuMX clone. In this talk I will discuss the capabilities and limitations of the new feature including: - Scope - Capabilities - Limits - Potential impact on concurrency
Kirill & Kostja will present an overview of Tarantool, an open source in-memory DBMS. They will explain why it is cool to have a DBMS in the same address space as your application server, why Tarantool is in fact single threaded and why the in-memory DBMS now features new disk-oriented engine.
In a sharded MongoDB cluster, scale and data distribution are defined by your shard keys. Even when choosing the correct shards key, ongoing maintenance and review can still be required to maintain optimal performance.
MySQL and MariaDB have a long list of old, potentially trivial bugs that are annoying if you hit them. No one's really bothered to fix them, so why not you? It doesn't take a large amount of C/C++ knowledge to pick out an old bug and build/test a MySQL/MariaDB patch to fix an old bug.
In this session we'll discuss how we use Ansible to manage the internal MySQL services at DigitalOcean, where this has worked well for us, as well as some of the issues we've experienced along the way.
Infrastructure automation is not easy, especially for stateful services like MySQL (or any other database for that matter). It goes way beyond the capabilities of Ansible, Chef, SaltStack or other similar tools.
Are you struggling with too much data? Are your MySQL databases able to ingest the influx of new data? Are you considering an alternate database but modifying your application would be challenging? Are you able to query efficiently your data once ingested?
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