Fikri Firman Fadilah3 min read
Building State Machines That Survive Missing Events
Handle out-of-order and lost events in distributed systems without strict ordering. Practical patterns for gap detection, recovery, and avoiding zombie states.
Journal
Articles on engineering,
systems, and product craft.
A compact reading surface for technical notes, architecture decisions, and observations from shipping real systems.
Fikri Firman Fadilah3 min read
Cost Attribution in Multi-Tenant GenAI Systems
Practical instrumentation strategies for measuring and allocating LLM costs in production across tenants, A/B tests, and feature flags without sacrificing latency.
Fikri Firman Fadilah4 min read
Designing Fallback Chains When LLM Requests Fail Mid-Stream
Practical patterns for handling LLM failures at scale: cached responses, tiered model fallbacks, request reshaping, and honest trade-offs when your primary strategy breaks.
Fikri Firman Fadilah8 min read
How Service Boundaries Create Hidden Dependencies and When to Accept Them
Explore temporal, data, and operational coupling across service boundaries. Learn decision frameworks for when loose coupling justifies complexity versus pragmatic tight coupling in production systems…
Fikri Firman Fadilah5 min read
When Centralized Logging Becomes Your Bottleneck and How to Recover
A field guide to diagnosing log volume problems, choosing between sampling and filtering, and building sustainable logging infrastructure without over-engineering.
Fikri Firman Fadilah4 min read
Designing Systems That Fail Predictably and Safely
Build systems that reduce functionality intentionally rather than cascade. Practical patterns for detecting dependency failures early and maintaining safe operational boundaries.