Md. Mahmudul Hasan Dip — Writing & Architecture CasesTechnical articles and architecture case studies on backend engineering, distributed systems, Golang, Python, and platform engineering.https://mhdip.com/en-us[Case Study] Scaling upay's High-Throughput Golang Financial Gatewayhttps://mhdip.com/cases/upay-golang-financial-gateway/https://mhdip.com/cases/upay-golang-financial-gateway/How upay scaled its high-throughput Golang financial gateway: slashing latency by 75% using multi-phase Scatter-Gather, Saga rollbacks, and ULID indexing.Thu, 27 Aug 2026 00:00:00 GMT[Case Study] Architecting a Polyglot CIAM Engine for Digital Bankinghttps://mhdip.com/cases/polyglot-ciam-architecture/https://mhdip.com/cases/polyglot-ciam-architecture/Discover how we architected a polyglot CIAM engine using Go for sub-50ms edge biometric auth and Python for stateful banking profile orchestration at UCB One.Sat, 01 Aug 2026 00:00:00 GMT[Case Study] Defeating Cache Stampedes with Distributed Locking at UCB Onehttps://mhdip.com/cases/ucbone-cache-stampede-mitigation/https://mhdip.com/cases/ucbone-cache-stampede-mitigation/How I protected core banking databases from thundering herds using Redis SETNX and custom Circuit Breakers.Sat, 25 Jul 2026 00:00:00 GMT