HPA in practice: why CPU-based autoscaling kept scaling at the wrong times
Three months ago, our crypto market data ingestion pipeline hit a wall. During high-volatility events, execution latency spiked from 15ms to over 800ms. O…
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GitHub Actions self-hosted runners on Kubernetes: cost, caching, and cleanup
At my algorithmic trading firm, our execution algorithms and alpha research pipelines depend on rapid feedback loops. If a quantitative researcher has to…
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Velero backups for CloudNativePG: testing restores before you need them
A backup is nothing more than an unverified promise. In the world of stateful Kubernetes workloads, relying on untested backups is a classic operational f…
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Local Kubernetes dev environments: k3d, Tilt, and the inner loop that finally stuck
The worst part of building distributed execution systems is the time wasted waiting for Docker images to compile, push, pull, and deploy. When you are wri…
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Spring Cloud Gateway as the front door: routing, retries, and the timeouts that bit me
When you are routing high-frequency order flows and real-time market data enrichment requests, milliseconds are not just metrics—they are PnL. In our algo…
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ArgoCD app-of-apps: structuring GitOps for a dozen microservices
Eighteen months ago, my team transitioned our core algorithmic execution engine from a tightly coupled Django monolith to twelve specialized microservices…
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Graceful shutdown on Kubernetes: SIGTERM, preStop hooks, and dropped requests
During a high-volatility trading session last quarter, our execution system experienced a silent failure. We were running a rolling deployment of our core…
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Resource requests and limits: the tuning pass that cut our node count 30%
Our algorithmic execution engine was costing us $14,800 a month in raw EC2 compute across three Kubernetes clusters. The irony was painful: our average CP…
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Docker build caching in GitHub Actions: from 12-minute builds to 90 seconds
Every second added to a feedback loop is a tax on engineering velocity. For my algorithmic trading platform, our deployment pipeline was suffering under a…
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PodDisruptionBudgets and node upgrades: upgrading Kubernetes without a maintenance window
In algorithmic trading, "maintenance windows" are a luxury we cannot afford. When your systems route orders to global financial exchanges operating across…
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