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Docker Swarm Load Testing: Why More Replicas Didn't Fix Throughput

DevOps

July 202612 min read

Docker Swarm Load Testing: Why More Replicas Didn't Fix Throughput

During my SRE research at Commsult Indonesia, doubling Docker Swarm replicas cut latency but barely moved throughput, until pg_stat_activity revealed a single locked database row was the real bottleneck.

Building a Custom CPU Autoscaler for Docker Swarm

DevOps

July 202610 min read

Building a Custom CPU Autoscaler for Docker Swarm

Docker Swarm has no Kubernetes-style Horizontal Pod Autoscaler, so during my SGU thesis I built one myself: a Bash daemon with asymmetric streak consensus and a cooldown window.

Finding a Postgres Row-Lock Bottleneck with Prometheus + InfluxDB

DevOps

July 202611 min read

Finding a Postgres Row-Lock Bottleneck with Prometheus + InfluxDB

How a dual-backend observability stack let me watch application latency and infrastructure load in real time, then localize a bottleneck all the way down to a single Postgres tuple lock.

k6 SLO Quality Gate for Bitbucket Pipelines CI/CD

DevOps

July 20269 min read

k6 SLO Quality Gate for Bitbucket Pipelines CI/CD

Our Bitbucket Pipelines release flow had load testing, autoscaling, and dashboards, but no automated performance check before production. Here's the one pipeline step that fixed it.

Dokploy: A Self-Hosted PaaS for Your Own VPS

DevOps

July 202610 min read

Dokploy: A Self-Hosted PaaS for Your Own VPS

Run Dokploy as a Heroku-style, self-hosted PaaS on a single VPS. Here is what runs under the hood, and how app deploys, databases, Traefik routing, and backups fit together.

Coolify vs Dokploy: Choosing a Self-Hosted PaaS

DevOps

July 20269 min read

Coolify vs Dokploy: Choosing a Self-Hosted PaaS

A hands-on comparison of Coolify and Dokploy for self-hosting apps on a VPS, covering architecture, database management, git deploys, and resource use.

Showing 115–120 of 428 posts

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