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#reliability

General discussions on building and maintaining reliable software systems.

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We added a fourth server and made our cluster easier to break

We added a fourth server and made our cluster easier to break

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2 min read
Approval timeouts: what your agent should do when nobody answers

Approval timeouts: what your agent should do when nobody answers

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4 min read
A server sent me Retry-After: 0 and my retry loop lost its brakes

A server sent me Retry-After: 0 and my retry loop lost its brakes

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5 min read
Every cache entry we warmed at deploy expired in the same minute

Every cache entry we warmed at deploy expired in the same minute

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2 min read
Email Deliverability Setup: NodeJS Custom Domain Suppression and Complaint Polling

Email Deliverability Setup: NodeJS Custom Domain Suppression and Complaint Polling

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7 min read
Token Accounting in LLM Agents: Where the Diagnostic Signal Hides

Token Accounting in LLM Agents: Where the Diagnostic Signal Hides

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5 min read
The partner recovered in four minutes and our circuit breaker kept them out for three hours

The partner recovered in four minutes and our circuit breaker kept them out for three hours

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2 min read
Idempotency Keys: Practical Guide for Distributed Systems

Idempotency Keys: Practical Guide for Distributed Systems

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5 min read
Meet a 98% uptime SLA on AWS, and beat it!

Meet a 98% uptime SLA on AWS, and beat it!

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3 min read
I Rejected the Same dev.to Reliability Fix on One Path and Shipped It on Another

I Rejected the Same dev.to Reliability Fix on One Path and Shipped It on Another

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6 min read
Colocate Adaptive Concurrency at the Bottleneck (2026)

Colocate Adaptive Concurrency at the Bottleneck (2026)

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4 min read
The Crash Window: Why I Picked Double-Counting Over Data Loss

The Crash Window: Why I Picked Double-Counting Over Data Loss

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4 min read
Our database was fast for six hours and then it ran out of credit

Our database was fast for six hours and then it ran out of credit

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2 min read
One message we could not parse stopped four hours of dispatches

One message we could not parse stopped four hours of dispatches

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2 min read
How to Evaluate AI Agents: Reliability, Cost, Latency, and Failure Modes

How to Evaluate AI Agents: Reliability, Cost, Latency, and Failure Modes

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7 min read
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