Engineering Resilient Systems for a Magnitude 5.7 Earthquake in Pakistan
Observed 2026‑10‑17 – USGS event page The sudden release of strain that generated a 5.7‑magnitude event in Pakistan highlights the need for engineer…
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Exponential Backoff Isn't Enough: The Retry Storm Hiding in Your Recovery Path
The problem A dependency blips for 400ms — a deploy, a GC pause, a brief network partition, doesn't matter which. Every client with an in-flight req…
Production failures: the things that page you · 3. Retry storms
Production failures: the things that page you · Chapter 3 of 24 · Reliability · new chapter every Friday morning By the end of this chapter: See how…
The sync that deleted our leads every 60 seconds
The sync that deleted our leads every 60 seconds Leads were vanishing. Not bouncing, not erroring — just gone. New leads would appear in our registr…
Бюджет 999: как в Авито считают надёжность и почему не копируют модель Google
Привет, Хабр! Меня зовут Иван Тарасов , я TUL Architecture Governance в техплатформе Авито . Одна из моих команд — SLA — создаёт условия для повышен…
Honoring Margaret Hamilton: Preserving Legacy of Pioneers Behind Modern AI and Autonomous Systems
Technical Reconstruction of Margaret Hamilton's Contributions to Software Engineering and AI Foundations Main Thesis: Margaret Hamilton's pioneering…
We migrated the receiver but forgot the return trip
We migrated the receiver but forgot the return trip Same incident, different lesson. (If you're counting, this is the day our infrastructure decided…
Compare Startup SMS Alerts Provider Templates — 4 US-EU Signature Tests
Operational constraint: a startup that needs to compare an SMS alerts provider cannot treat every failed message as proof that a recipient is invali…
Transactional Email Operations: Compliance, Custom Domains, and Bounce Reconciliation
A signup system has one unforgiving constraint: a verification link that arrives late, twice, or not at all is a reliability failure at the exact mo…
Preserve First: Recovery Design for Local Creative Data
The most dangerous button in a creative tool is not "delete." It is the recovery dialog that appears when something is already wrong: "We couldn't l…
DNS Record Write Rejected Because Zone ID Is Not Domain Name — Validation Debug
Short answer: when a DNS record write is rejected because a zone ID is not a domain name, resolve the opaque reference first, canonicalize the retur…
Claude Keeps Going Down, and Anthropic's Own Status Page Says So
Open Claude on a weekday in August 2026 and there’s a fair chance you’ll meet a spinner, an error, or the words “server is busy” where an answer sho…
Retries didn't make GitHub resilient. They DDoS'd it.
A capacity blip at GitHub resulted in an outage that lasted 7 hours and 47 minutes. The infrastructure recovered faster than the clients let it. 😬 W…
What Idempotent Actually Means: Why Retries Are Safe (and When They Aren't)
Originally published on Loop & Retry — field notes on building LLM agents that survive production. Search for "what does idempotent mean" and yo…
Production Hardening an AI Video Pipeline: Retries, Fallbacks, and Crash Guards
The video generation platform I work on orchestrates a long chain of AI calls — a video generation provider for clip rendering, Claude for scene pla…
Retry patterns: when you should give up (and why most code doesn't)
Originally published on Loop & Retry — field notes on building LLM agents that survive production. The retry-budget post answered the HOW: a sha…
Preventing Duplicate Password-Reset Notifications (Under SMS Timeout and Retry Pressure)
Treat an SMS timeout as an unknown outcome, not a failed send: accept each password-reset event once, persist its expiry and idempotency key before…
One bad step, N bad steps: how agent failures cascade
Originally published on Loop & Retry — field notes on building LLM agents that survive production. Here's the failure mode that surprises people…
Test OmniRoute Fallbacks for Semantic Consistency, Not Just Availability
diegosouzapw/OmniRoute is an MIT-licensed AI gateway that advertises one endpoint across many providers and models, with quota-aware fallback and to…
Test Saga Compensation When Payment Succeeds but Inventory Times Out
An order reserves inventory, charges payment, then times out waiting for reservation confirmation. Cancellation begins. A late inventory success arr…
AI memory가 자기 출력을 다시 입력으로 세지 않게 하는 법
AI memory가 자기 출력을 다시 입력으로 세지 않게 하는 법 AI memory 시스템은 대화에서 기억을 만들고, 그 기억을 다시 요약해 더 높은 수준의 결론을 만들 수 있습니다. 여기서 원본에 가까운 입력과 시스템이 만든 파생 결과를 구분하지 않으면, 파생 결…
Merge Concurrent Agent Patches by Base Commit and Hunk Ownership
Two coding agents start from commit A. One finishes quickly and merges as B. The second finishes later with a patch that was valid against A. Applyi…
Treat Per-Task Model Switching as a Concurrency Protocol
Changing the model for a running AI task is not a settings update. It is a distributed operation: read current task -> prepare credentials/config…
Service Level Objectives for Complex Microservices
Why SLOs Break in Microservices A SLO that works for a monolith often collapses when you distribute the same logic across 30 services. The math of a…
Building a Culture of Reliability: Beyond the SRE Handbook
You Can't Hire Your Way to Reliability I've seen companies hire 5 SREs and expect reliability to magically improve. It doesn't. Reliability is a cul…
On-Call Engineer Burnout: How to Build Sustainable Rotations
Most on-call rotations start with good intentions and end with someone updating their LinkedIn. The schedule ships as a shared Google Sheet, the tea…
Why Your Microservices Need Circuit Breakers (And How to Add Them)
The Cascading Failure That Took Down Everything Our payment service went down for 3 minutes. No big deal, right? Except every service that called pa…
Your Guardrails Are a Firewall. Your Failures Are a Cascade
TL;DR— Most production AI teams build safety layers using the content-moderation mental model: classify input, classify output, block or pass. But t…
Exponential backoff with jitter stopped our CI retry storms
TL;DR: Exponential backoff with jitter spreads client retries over time so a recovering service doesn't get flattened by a synchronised wave. We add…
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…