Scale a Node.js API on One Machine with Cluster
Use Node.js Cluster to distribute traffic across CPU cores on a single server without external load balancers.
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nodejsUsing RabbitMQ Quorum Queues for Durable High‑Availability Messaging
Deploy RabbitMQ quorum queues for durable, highly‑available messaging. This guide walks through clustering, declaring a quorum queue, enabling publisher confirms, and testing node failure and recovery while highlighting limitations and best‑practice checks.
rabbitmqNode.js CPU‑Bound Offload: worker_threads, cluster, child_process & chunking
When Node.js services hit CPU‑bound work, the event loop stalls. This guide maps four off‑load strategies—worker_threads, cluster, child_process, and cooperative chunking—to constraints like shared memory, fault isolation, deployment topology, and latency SLOs, and shows a worker‑pool example.
Zero‑Downtime Reload with PM2: Architecture, Checks, and Failure Scenarios
Learn how PM2’s `reload` command achieves graceful restarts, the minimal architecture needed, data boundaries to avoid state loss, operational checks, and when to rethink the design.
pm2Diagnosing CouchDB View Index Build Failures in a Clustered Deployment
Step-by-step guide to diagnose and fix CouchDB view index build failures in a cluster, covering disk space, I/O saturation, design doc sync, and manual rebuild checks.
couchdbDiagnosing Vert.x Hazelcast Cluster Failures: A Practical Guide
When Vert.x nodes silently fall back to a local event bus, the culprit is often a Hazelcast clustering issue. This guide walks through common causes, ordered checks, fixes, and escalation steps with real‑world examples.
vertxDiagnosing Vert.x Event Bus Cluster Failures: A Step-by-Step Guide for Hazelcast 5.x
Vert.x Event Bus cluster failures often stem from discovery mismatches, network issues, or codec conflicts. Follow this diagnostic guide to identify and resolve common problems with Hazelcast 5.x.
Automating VM Failover with Proxmox VE High Availability
Learn how Proxmox VE HA automatically restarts VMs after a host failure, reducing downtime to seconds with shared storage and fencing.
Proxmox on Ceph performance & stability issues / Configuration doubts
We have just installed a cluster of 6 Proxmox servers, using 3 nodes as Ceph storage, and 3 nodes as compute nodes. We are experiencing strange and critical issues with the performances and stability of our cluster. VMs and Proxmox web access tends to hang for no obvious reason, from a few seconds to a few minutes - when accessing via SSH, RDP or VNC console