Blog

A practical guide to MySQL failover strategies, comparing automated and manual approaches, and examining risks such as replication lag, split-brain, and incorrect promotion in high availability environments.

Operational guide to diagnosing and resolving MySQL replication lag, covering correct measurement techniques, relay log analysis, bottleneck identification, and practical strategies for reducing replication delay in production systems.

A deep technical explanation of MySQL replication lag mechanics, covering the replication pipeline, network and apply-stage bottlenecks, throughput imbalance, and the impact of different replication models on latency and availability.

Announcing Tungsten Cluster and Tungsten Replicator v8.0.3. This maintenance release delivers stability improvements, Java compatibility fixes, real-time replication performance monitoring, security library upgrades, and installation workflow enhancements.

A deep dive into operational excellence and monitoring strategies for multi-region MySQL in SaaS environments — including deployment automation, observability, compliance, and recovery best practices.

Learn how to optimize MySQL replication performance in Tungsten Cluster by tuning the Applier settings. Improve replication speed, minimize commit overhead, and balance data availability with advanced tuning techniques.

Tungsten Clustering ensures high availability with robust failover capabilities, driven by the Tungsten Manager's health checks and predefined rules. In this blog post, we explore key processes like handling heartbeat gaps, network partitions, and availability checks. We also provide tips for tuning parameters to optimize performance and maintain a resilient database cluster.

Tungsten Dashboard v1.0.16 is now available, featuring a crucial bug fix that resolves a regression in the configuration processing function. This update ensures smoother and more reliable performance, helping you maintain seamless workflows. Update today to benefit from the enhanced stability of your dashboard experience.

Your MySQL database cluster contains your most business-critical data; in this post, we discuss how to ensure proper performance under load.

In this blog post we explore various options for performance tuning MySQL server for better replica replication performance.

The Question

Recently, a customer asked us:

Why would heavy disk IO cause the Tungsten Manager and not MySQL to be starved of resources?

For example, we saw the following in the Manager log file tmsvc.log:

This blog post discusses the Tungsten Replicator and how latency is calculated when extracting events on a Primary, and when applying events to the Replicas. We also examine what latency is, and the two different types of latency that we track - how to interpret them and how they differ.