Designing for failure before it happens →
Good architecture reduces the blast radius and improves recovery confidence long before an incident hits.
Articles
Architecture decisions, explained clearly.
Articles explain the architecture and trade-offs behind CloudJi projects, from the evolving Core platform to Fundamental infrastructure and Individual projects.
The evolving AI infrastructure platform
Core-Project Articles
Why a Production Search Platform Needs Public and Private Subnets →
North–south entry paths, private workloads, NAT trade-offs, VPC endpoints, security groups, and DNS.
From S3 Upload to OpenSearch: Designing a Reliable Processing Path →
S3 events, queues, workers, retries, DLQs, idempotency, duplicate delivery, and backpressure.
How OpenSearch Stores and Finds Documents →
Indexes, mappings, inverted indexes, analyzers, BM25 scoring, shards, and replicas—explained from an infrastructure viewpoint.
Presigned URLs Without Giving the Browser AWS Credentials →
The request flow, temporary permission, content validation, expiration, and safe upload boundaries.
Retries Are Not Reliability Until Operations Are Idempotent →
Why duplicate events are normal and how workers avoid corrupting state while safely retrying.
Building an AI Infrastructure Lab Without a Surprise AWS Bill →
Short-lived environments, budgets, teardown plans, cost-heavy services, and what to simulate locally.
Standalone projects and experiments
Individual-Project Articles
DARWIN: Turning Technical Topics into Repeatable Hands-on Labs →
A practical framework for structuring a lab around one objective, clear prerequisites, verification, troubleshooting, and cleanup.
Foundational knowledge and infrastructure concepts that support multiple projects
Fundamental Articles
What good observability actually looks like →
The value of observability is not collecting more data; it is creating clearer operational decisions.
Terraform patterns that scale cleanly →
Good infrastructure code grows with the team when structure and dependencies are deliberate.