Your MCP Agent is Logging "Sucess: true" While the task never ran
You build an agent. It calls an MCP tool, gets a response, logs success: true, and moves on. Thirty-three minutes later a customer emails asking why t…
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Surviving the region you run in: failover on Aurora DSQL, and what the demo proves
The thesis Quorum is built on is uncomfortable and true: the tools a team uses to coordinate an incident often live in the same region as the thing th…
Sliding-Window Spend Guard: the $47K Loop Per-Call Caps Miss
Sliding-Window Spend Guard for AI Agents: Catch the $47K Loop Per-Call Caps Miss A sliding-window spend guard sums what your agent has spent over the …
Model Selection for Weibull Series Systems: When Simpler Models Suffice
When can you safely use a simpler model for a series system? I ran extensive simulation studies with likelihood ratio tests to get a quantitative answ…
The Economics of Reliability: When to Invest, When to Accept Risk
Reliability is not a virtue. It's an investment. Too little and you lose customers. Too much and you can't afford to ship. The question is: where's th…
Your Scraper Died at Row 12,000. The Rerun Pattern.
My scraper died at row 12,000 of 50,000, three hours in. The crash itself was cheap. A process gets OOM-killed, a quota trips, a machine reboots, it h…
Railway vs Fly.io: I Wanted More Control After Railway’s May 2026 Outage
TL;DR I no longer recommend Railway for serious production workloads after its recent pattern of incidents. Fly.io is not simpler, but it is one of th…
Why We Restart to Fix It
On Second Thought — Episode 10 The pager has gone off. Memory on the auth service is climbing in a way it should not be. You SSH in, you observe nothi…
The Fire That Reached the Backups: The OVHcloud Strasbourg Data-Centre Fire, 2021
Tales from the Bare Metal — Episode 05 In the early hours of 10 March 2021, a fire began in a power room in Strasbourg. By morning an entire data cent…
Claude Code for Canary Deployments: How I Ship to 1% of Users Before Breaking Everything
I used to ship by faith. The change passed code review, the tests went green, the deploy button was right there, and I pressed it. Most of the time it…
Grafana 'No Data' after migration: 7 reconcilers we had to kill first
The first fix lasted 90 seconds. We had corrected the Grafana datasource URL from prometheus:9999 back to prometheus:9090, watched the pod roll, refre…
What SSL Error Means and How to Fix It
An SSL error means your browser or HTTP client could not complete the TLS handshake with the server. The connection was dropped before any data was ex…
How to Fix Slow DNS Lookup: A Complete Troubleshooting Guide
Every connection your application makes starts with a DNS lookup. When that lookup is slow — or fails entirely — the symptoms range from vague latency…
Does Railway Have a Reliability Problem? Spring 2026 Is Just the Tip of the Iceberg.
Summary: Railway logged 8 incidents in 8 days in May 2026. That sounds bad before you find that they had 1,112 outages since October 2022, averaging r…