Category: MQ
Blog
ActiveMQ Upgrade & Patching Strategy: The Expert Guide
On October 27, 2023, the Apache Software Foundation published CVE-2023-46604, a CVSS 10.0 remote code execution vulnerability in Apache ActiveMQ® that allowed unauthenticated attackers to execute arbitrary code by exploiting the OpenWire protocol's ClassInfo deserialization.
Blog
ActiveMQ Performance Benchmarks: A Complete Methodology Guide
Most ActiveMQ performance benchmarks are wrong, not slightly off, but fundamentally invalid for capacity planning. Performance benchmarking done incorrectly is worse than not benchmarking at all. A number that looks like a throughput measurement but was collected without JVM warmup, without latency percentiles, with the load generator co-located on the broker host, and while producer
Blog
ActiveMQ Log Analysis & Diagnostics: The Expert Guide
Senior engineers who are fast at diagnosing ActiveMQ incidents share one trait: they know exactly what they are looking for in the broker log before they open it. They know the PFC signature, the OOM warning pattern, the journal recovery sequence, and the connection drop format. For them, the log is not text to search through, it is a structured operational record that maps each entry to a specific broker state.
Blog
ActiveMQ Capacity Planning: The Complete Framework
Most ActiveMQ deployments are sized in one of two ways: either under-provisioned from underestimating growth ("we'll upgrade when we need to") or over-provisioned from anxiety ("better give it 32GB just in case"). Both approaches are avoidable with a structured capacity planning framework that translates your messaging workload characteristics into specific hardware and configuration requirements.
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ActiveMQ Backup and Disaster Recovery: Complete DR Guide
A message broker's backup and disaster recovery plan is the last line of defense against scenarios that HA cannot address: a full datacenter outage, catastrophic hardware failure that destroys both primary and secondary nodes, accidental message deletion, or KahaDB corruption that prevents the broker from starting.
Blog
ActiveMQ JVM Memory & GC Tuning: Heap Sizing, G1GC, ZGC Guide
The JVM is the runtime foundation of every ActiveMQ deployment. Message throughput, delivery latency, producer flow control triggers, OOM crashes, and GC-induced delivery pauses all trace back to JVM memory configuration. Yet ActiveMQ ships with a 512MB heap and no GC logging, appropriate for a developer laptop, not for an enterprise message broker handling millions of messages a day.