Orchestration & Scheduling
A pipeline is never one script — it’s many tasks (ingest this, clean that, join…
Tag
#idempotency
12 posts
Ingestion & Change Data Capture
Data engineering starts with getting data in. It sounds mundane — “copy data…
Idempotency in Distributed Systems — Why Your Retry Just Charged the Customer Twice
Here is a bug that has cost real companies real money: a customer taps “Pay ₹50…
Distributed Systems in Practice — Failures, Time, Consensus and Correctness
Every backend engineer today builds distributed systems, whether they call it…
Payments Engineering in India — From UPI to Ledgers
Every app in India takes payments now. Food delivery, ed-tech, D2C brands, SaaS…
Idempotency, Retries and Webhooks — Never Charge Twice
Here’s a bug I helped debug at a mid-sized ed-tech company. Some students were…
Messaging and Delivery Guarantees
Every company I’ve worked with has had at least one “duplicate” incident from a…
Timeouts, Retries and Idempotency
Here’s a bug I’ve seen in some form at three different companies. A cashback…
Reliability and Human-in-the-Loop for AI Agents
At 4:10 PM on a Thursday, our cloud provider did a routine node rotation in the…
Pattern: Dealing with Contention
Some of the most memorable interview questions are really contention questions…
Distributed Transactions
In a single database, a transaction is a gift: , do several writes, , and either…
Design a Payment System
Payment systems are the backbone of e-commerce. A bug here does not just cause a…