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- Indexed issues, last 90 days
- 10
- Latest publication
- Sep 24, 2026
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- Earliest in this view
- Jul 6, 2026
Latest issues
🚦 Spotify Doubled Its Engineering Output. The Bottleneck Just Moved. (opens the original)
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⚡ TLDR17,000 merged changes in August, up from roughly 8,100 a year earlier. That is Spotify’s engineering org after a year of AI coding tools, spread across nearly 3,000 production services handling 11 to 12 million backend requests per second.The part most people skip past:Their incident reviews have found no AI-authored code acting as a material direct contributor to a major incident so farThe strain showed up after the merge, in review, testing, rollout, observability, and rollbackChange vol
🧱 Your Multi-Agent Architecture Is a 2016 Microservices Diagram With the Boxes Renamed (opens the original)
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⚡ TLDREvery multi-agent architecture diagram published this year looks like a microservices diagram with the boxes renamed. Planner, researcher, coder, reviewer, arrows between them, a gateway on top.The resemblance is earned, because both take a monolith (one giant prompt, one giant service) and split it into narrow units that talk over defined interfaces.Half the microservices playbook transfers cleanly:Contracts between unitsFailure isolationExplicit orchestrationTracingThe other half breaks,
🔌 Stripe's Proxy Was Opening Hundreds Of Thousands Of Connections (opens the original)
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🤔TL;DRStripe ran Envoy for almost ten years, then replaced it with their own Go proxy, mesh-proxy. The payoff:~50% less CPU under high load, ~50% lower latency~3,000 days of inter-service latency saved every dayOne connection per host, down from one per workerNew Ruby load balancing bought 15-20% more burst headroomWhy rebuild at all??? Stripe targets 99.9995% reliability on infra carrying about 1.6% of global GDP. One API call fans out into many internal requests, so a few hundred microseconds
How AssemblyAI Collapsed Four Vendors Into A single API Key (opens the original)
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TLDRA production voice feature in 2026 typically ships with four vendor relationships: a transcription API, a PII redaction step somebody built in a sprint, an LLM provider, and a compliance review s… Read more
GitHub's 8-Hour Outage Was Mostly Retries (opens the original)
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<img alt="" class="sizing-normal" height="764" src="https://substackcdn.com/image/fetch/$s_!jQzP!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fe9883a61-3b73-499a-9206-b70d96f74cf3_2400x1260.pn
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