KAkamal aboueidinkamalaboueid.hashnode.dev·8h ago · 6 min readDemystifying OAuth 2.0 and OpenID ConnectWhen developers implement features like "Sign in with Google", they often encounter a set of confusing terms: Client ID, Client Secret , Authorization Code, Access Token, and ID Token To understand wh20
UKUsman Khaninctousman.hashnode.dev·6h ago · 4 min readProduction AI & LLM Pipelines: Guardrails, Streaming Resilience, and Cost-Aware FallbacksMoving generative AI features from prototype scripts to mission-critical SaaS production requires far more than wrapping an OpenAI or Anthropic API client. Upstream API timeouts, rate-limit spikes, co00
LSLokesh Sanapalliinblog.lokesh1729.com·1d ago · 11 min readSystem Design Interview : Multi-version Concurrency Control in Databases — The icebreaker for deciding which relational database to chooseThe goal of MVCC in a DBMS is to allow multiple transactions to read and write to the database simultaneously without interfering with each other when possible. The basic idea of MVCC is that the DBM00
UKUsman Khaninctousman.hashnode.dev·2d ago · 5 min readZero-Downtime Database Migrations: Shadow Tables, Dual-Writing, and Schema ExpansionTaking a mission-critical B2B SaaS database offline for a multi-hour ALTER TABLE migration is no longer acceptable for high-growth engineering teams. Long-running DDL statements acquire exclusive tabl00
UKUsman Khaninctousman.hashnode.dev·3d ago · 4 min readAdvanced System Architecture: Designing Multi-Region Read Replicas and Global Data ConsistencyAs enterprise SaaS platforms expand internationally, serving all database queries from a single primary region causes severe latency degradation for global users. Distributing read replicas across mul00
MTMuhammad Tahirinmtdeveloper.hashnode.dev·3d ago · 14 min readDesigning High-Throughput Event-Driven Microservices with Kafka and RabbitMQThis article was originally published on Muhammad Tahir's Portfolio. Introduction & Industry Context In the landscape of modern software architecture, event-driven microservices have transitioned from00
ASAman Suryavanshiinaman-tech.hashnode.dev·4d ago · 12 min readOP-01: The Burnout - Why I Replaced Myself with a Telegram BotExpert Card: I am Aman Suryavanshi, an AI Systems and Autonomous Pipeline Architect. I design resilient automation pipelines, event-driven integrations, and agentic systems that run in production with00
BBSPAssetManagementinbspassetmanagement.hashnode.dev·6d ago · 4 min readState Management in Fintech: Engineering Secure Account and Order WorkflowsBuilding modern financial applications requires more than just pushing live price data to a frontend DOM. While rendering charts efficiently is critical, the true test of a trading platform’s architec11I
TFThe Flux Readinthefluxread.hashnode.dev·Sep 30 · 1 min readMeta's Muse AI caught reading private texts -then lied about how it did it.A technology columnist recently installed Meta's new Muse AI agent, explicitly revoking all permissions - including access to Messages and Full Disk Access. A few days later, the agent referenced a pr00
SIstamp IQinstampiqhashnodedev.hashnode.dev·Sep 28 · 4 min readSystem Design: Building a Live Event Analytics Platform with RFIDSystem Design: Building a Live Event Analytics Platform with RFID & Edge Computing If you look under the hood of most B2B event management software, you will find a glaring architectural flaw: they ar10
