Farshid/Ashouri

Notes on software engineering

Things I learn
building systems

Distributed systems, workflow orchestration, PostgreSQL and the things I learn building durable software.

546 Posts
526 Topics
4 Years
  1. 2026

  2. Agentbus has made my life much more interesting

    Three sessions, one the trader, the other is the sentinel (chief financial officer) and the third one is the audit. here is the audit's comments on communication between dev team and the CFO.

    agentbus
    1 min read

  3. Market Making 101: How to Get Paid for Being Patient

    A practical tutorial on passive market making — the trading method where you never predict the market, never chase a chart, and earn your money from the width of the spread.

    market-making trading crypto tutorial quant
    9 min read

  4. Futex: Silence is a denial

    On building a human-in-the-loop control plane for agents that can spend money, grant access, and delete things. — 0.

    futex runflow supervice migretti agentbus
    19 min read

  5. RevolutX, Good, Bad, Ugly

    A technical and product review of Revolut's crypto exchange, from building an automated market maker on it — the documented behaviour, the undocumented behaviour, the arithmetic that decides…

    revX RevolutX exchange crypto venue
    16 min read

  6. RunFlow: building a place to run code you don't trust

    - I should declare my position up front, because it colours everything below. I did not set out to build a container platform.

    runflow tokengate supervice migretti bulkman
    12 min read

  7. Building TokenGate: a meter that would rather overcharge you than lose the count

    Bias declared up front, same as last time: TokenGate is mine. I designed it, I wrote it, I run it in production, and I have every commercial incentive to tell you it is wonderful.

    tokengate
    13 min read

  8. I Built My Own CI/CD, and the Interesting Part Wasn't the CI

    On replacing GitHub Actions with something that owns almost nothing — and why that turned out to be the whole point.

    ci/cd continuous-integration continuous-deployment github-actions sre
    21 min read

  9. Nature’s Pinocchios

    disclaimer : AI helped me to generate most parts of the text and make it more readable. The Deceptive Nature of the Animal Kingdom: Instinct or Intent?

    science
    4 min read
  10. 2025

  11. The Shape-Shifter: Why AI-Driven Polymorphic Attacks Keep Me Up at Night

    We used to have it relatively easy. When I first started paying attention to cybersecurity, malware was static. It was a specific file, with a specific "fingerprint" (hash).

    cybersecurity malware polymorphic attack
    2 min read

  12. Highway Workflow Engine

    The Bank-Grade, Postgres-Native Workflow Engine. Highway is a durable workflow orchestration engine designed for systems where data integrity is non-negotiable .

    highway temporal dbos enterprise
    3 min read

  13. Zero Dependency Context Aware Command Line Project Management

    Code Agent Optimised Issue Tracker / Zero Dependency Context Aware Command Line Project Management 🤖 + = 🚀 I built a command-line issue tracking system for software development projects.

    llm project-management issue-tracker
    1 min read

  14. issue.db / your issue tracker in your repo

    So this was this week's side project: issue-queue.readthedocs.io here is the workflow: I hope you find it useful.

    issue-tracker project-management cli
    1 min read

  15. Authorisation for Humans - A complete RBAC library

    Auth is a RBAC lib I started back in 2015, when I badly needed something simple and quick. Since then, developers have download it hundreds of thousands of times, indeed, Pyhton Software Organisation…

    auth rbac python-library enterprise authorisation
    1 min read

  16. Castle vs. Moat

    This is the classic "Castle vs. Moat" debate in security architecture. While Docker provides a Moat (isolation from the host machine), the Sandbox provides the Code of Conduct (rules for what happens…

    docker til
    1 min read

  17. Circuit breakers needs durable state

    I just noticed that I have missed a big point during the design phase of my workflow engine! I Leonard that, proper circuit breakers must have a durable state in a proper database.

    circut-breaker distributed-systems til
    1 min read

  18. Critical lessons from implementing a highly complex workflow system

    - Transaction Boundaries are Sacred: When spawning child tasks, the parent MUST commit its transaction before children become visible to workers.

    til distributed-systems psycopg3 postgresql postgres
    1 min read

  19. Building Datashard: Solving Data Corruption in High-Concurrency ML Workflows

    I've been working on Highway, a Strict Atomic Workflow Management System that handles massive amounts of log data from multiple concurrent processes.

    Apache-Iceberg Apache Iceberg DataShard Snapshots
    2 min read

  20. A new Article about what I am doing

    I just published this article medium.com/@erlang/bank-grade-workflow-engine

    articles
    1 min read

  21. A comparison of advanced workflow engines

    Feature Highway Workflow Engine DBOS (from Demos) Apache Airflow Tork — — — — — Core Philosophy Decoupled Library . A resilient engine you integrate into your app. Integrated Framework .

    dbos highway workflow-engine durable-executions
    2 min read

  22. A complete workflow domain-specific language - Highway DSL

    rodmena-limited.github.io/highway dsl/ link to specs are here

    highway-dsl pypi workflow-engine dsl spec
    1 min read