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100 postsI dropped my French tutor and built an LLM-based learning system
A developer ditched a private French tutor and built a cheap spaced-repetition system using Claude, Groq Whisper and OpenAI TTS for grammar and speech practice.
Lessons Learned Scaling to 1 Million Lambda Functions
How ProGlove scaled its serverless SaaS platform from thousands to over a million AWS Lambda functions, and the quota, cost and architecture lessons learned.
Shopify Ditched Redis for MySQL in Inventory Reservations at Scale
Shopify moved its checkout inventory reservation system from Redis to MySQL, using SKIP LOCKED, composite keys and isolation tuning to scale through Black Friday peak traffic.
CommitBrief — AI code reviews, right in your terminal
A provider-agnostic, local-first CLI that reviews your staged changes, a historic range, or a whole GitHub pull request. Zero telemetry, no server. Free and open source.
commitbrief.comGoogle Denies Bounty for a Critical GCP Bug It Still Hasn't Fixed
Researcher Justin O'Leary found a critical Google Cloud IAM bypass in Config Connector; Google first praised it, then denied the bounty and left it unfixed.
USB Kill Switch and Dead Man's Switch Toolkit for Linux Servers
An open-source toolkit combines LUKS encryption, USBGuard and Discord alerts to auto-wipe server keys on physical tampering or operator inactivity.
Microsoft's DocumentDB Reimagines NoSQL on PostgreSQL
Microsoft open-sourced its vCore Cosmos DB engine as DocumentDB, a PostgreSQL-based NoSQL layer with MongoDB-compatible APIs, BSON support, and ambitions to become a NoSQL standard.
How to Design a Cancer Vaccine: Neoantigens and MHC Science
UNC's PIRL lab founders discuss neoantigen detection, MHC prediction, and the engineering challenges of personalized cancer immunotherapy in a three-hour deep dive.
Why Trusting the Database for API Auth Is a Security Risk
A technical look at how HMAC-SHA512 signing, cryptographic peppers, and layered tenancy checks prevent SQL injection attacks from turning into full tenant takeovers.
pg_stat_ch Streams PostgreSQL Query Telemetry into ClickHouse
pg_stat_ch is an open-source PostgreSQL extension that streams raw per-query telemetry to ClickHouse, offloading analytics from the database engine.
Why LLM Apps Must Be Engineered as Distributed Systems
A production AI app broke under load—not because of the model, but missing queues, caching, retries and observability. Backend engineering is the real differentiator.