Publications by tag databases

Debezium is a distributed platform for change data capture built on top of Apache Kafka. Here is a short introduction to it and our experience of connecting it with two DBMSs.

Our new exciting SRE/Ops stories include complicated Linux server migration (bare-metal to VM), large PostgreSQL replica recovery, small case with ClickHouse Kubernetes operator, and abnormal result of CockroachDB upgrade.

Fascinating lessons learned using the Kubernetes operator for PostgreSQL of our choice — Postgres Operator by Zalando. Problems and solutions, the story of migrating production.

Evaluating five popular Kubernetes operators for PostgreSQL: Stolon, Crunchy Data, Zalando, KubeDB, and StackGres — and comparing them in a features matrix.

Our stories include a poorly prepared Kafka in Docker, an unexpected network issue for ZooKeeper & ClickHouse, a faulty hardware in the data center, and the PgSQL database optimization.

Preparing your MySQL multi-master cluster for a huge upgrade in Linux. Making a smooth transition with some help of Percona Toolkit.

How we have moved a running Cassandra instance between Kubernetes clusters and changed the K8s operator to manage it.

How our approach to arrange data in Elasticsearch, manage its indexes and make backups has evolved due to real-life challenges.

Why you should be careful using Kubernetes operators for critical infrastructure and which tools might be useful for analyzing your Redis databases.

How KeyDB has helped us to get rid of a performance bottleneck using Redis in one of web applications.

What is important to know before you move your Cassandra to Kubernetes and which existing tools might help you with that.