Blog — BADJO Dibéa Koffi

Blog

Articles on Web3, Backend Engineering, and Software Craft.

Designing Idempotent Payment Webhooks in Spring Boot

The exact patterns I use to handle Stripe and Coinbase callbacks without double-processing or lost events.

How I reduced gas costs by 40% on a DeFi yield vault using assembly-level optimizations and storage packing.

How I built an AI agent that reviews pull requests, catches architectural anti-patterns, and suggests improvements.

Patterns and pitfalls I encountered running event-sourced services at scale with Spring Boot and Apache Kafka.

Training a 7B model on Foundry test suites to auto-generate meaningful fuzz tests for smart contracts.

A battle-tested strategy for schema migrations without locking tables or dropping connections.

Dissecting real exploits and writing Solidity guards that prevent reentrancy and price manipulation.

How I replaced 2,000 lines of Jenkins scripts with a single ArgoCD ApplicationSet.

Serving a 13B model in production for under $200/month using smart scheduling and autoscaling.

Stop copy-pasting configs across services — build auto-configured starters your team will thank you for.