SYS//OP
>SYSTEM.STATUS: INITIALIZING

Hey,
I'm Fajar!Hey,
I'm Fajar!Hey,
I'm Fajar!

Fajar Abdi Nugraha

A Software Engineer and sometimes a Solution Architect who builds and operates systems. My job is to keep production running, annual plans aligned, technical decisions made responsibly, deliveries predictable, and scope honest.GovTech / Cloud Services / Microservices

Status:
INITIALIZING ...
Load_Readiness:20.00%
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01 // HARDWARE NODES

NODE_STATUS[ONLINE]

SQL LAB.EXE

Persistent PostgreSQL WASM Node. Fully ACID compliant relational database running directly in your browser.

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NODE_STATUS[STREAMING]

TELEMETRY ANALYTICS.EXE

OLAP engine powered by DuckDB-WASM. Drop massive CSV/Parquet files and query them with zero latency.

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NODE_STATUS[MAPPING]

BLOG NETWORK.EXE

Interactive 3D visualization of semantic relationships within the blog archive using three.js

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02 // CORE PARADIGMS

01

CORRECTNESS BEFORE CLEVERNESS

Avoiding elegant solutions that obscure guarantees. Preferring explicit, sometimes verbose designs that make invariants, constraints, and failure behavior undeniable.

02

DETERMINISTIC BEHAVIOR

Building systems where outcomes are predictable under the same inputs. Minimizing hidden randomness through controlled concurrency, ordering guarantees, and reproducible execution paths.

03

SYSTEMS LIE UNTIL PROVEN OTHERWISE

Assuming every system is incorrect by default. Validating behavior through failure cases, edge conditions, and real execution paths instead of trusting design assumptions.

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03 // TECHNICAL ARSENAL

LANGUAGES
Java, Node.js, Go, .NET, PHP, Vue
INFRASTRUCTURE
AWS, EKS, Kubernetes, Docker
DATABASES & MESSAGING
OracleSQL, MySQL, DuckDB, Redis, Kafka, RabbitMQ

04 // OPERATIONAL AXIOMS

  • >Firefighting doesn't scale. Build systems that are boring in production.
  • >Documentation is infrastructure. If it's not documented, it's debt.
  • >Capacity must meet commitment. Optimism is not a strategy.
  • >Ship safely over ship quickly. Delivery without safety is shipping problems.
RULES

05 // RECENT TRANSMISSIONS

testinglatexmermaid

Testing Technical Features

A test post for LaTeX rendering and Mermaid diagrams.

INITIATE_READ_SEQUENCE
microservicesarchitecturedistributed-systemsbackend

Microservices: The Good Parts, The Bad Parts, and the Parts That Will End Your On-Call Rotation

Microservices solve the problem of large monoliths being hard to scale and deploy. They introduce the problem of distributed systems being hard to understand and debug. A balanced view from the trenches.

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performanceload-testingk6reliability

Load Testing Is Not Optional: A Guide to Not Discovering Limits in Production

Your service has a breaking point. You will find it. The only question is whether it's during a controlled test or during peak traffic on a launch day. Choose wisely.

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