Tenzaa's Tech Blog
This site is dedicated to sharing IT-related technologies.
Implementing Idempotent Event Handlers in Haskell Driven by BDD and DynamoDB Conditional Writes Implementing Idempotent Event Handlers in Haskell Driven by BDD and DynamoDB Conditional Writes
The system began dropping acknowledgements under load. Our event consumer, designed for at-least-once delivery from a Ka
2023-10-27 Distributed Systems
BDD DynamoDB Haskell Event-Driven Architecture Idempotency
Declarative Provisioning of a Heterogeneous Real-Time Event Pipeline Declarative Provisioning of a Heterogeneous Real-Time Event Pipeline
The initial system was a single, monolithic Java application tasked with an impossible combination of responsibilities:
2023-10-27 Architecture
Microservices Elixir Java Rust Pulumi Actix-web IaC
Implementing Zero-Downtime PostgreSQL Schema Migrations Using a Custom Rust and Tekton Pipeline Implementing Zero-Downtime PostgreSQL Schema Migrations Using a Custom Rust and Tekton Pipeline
The trigger for this project wasn’t a grand architectural vision; it was a production incident. A seemingly innocuous AL
2023-10-27 DevOps
Kubernetes CI/CD Tekton Rust PostgreSQL
Building a Resilient Two-Phase Commit Coordinator in Elixir for Cross-Service Transactions Building a Resilient Two-Phase Commit Coordinator in Elixir for Cross-Service Transactions
Our deployment process was a liability. A single feature release required orchestrating changes across three distinct se
2023-10-27 Distributed Systems
DigitalOcean WebSockets Elixir OTP Phoenix Two-Phase Commit (2PC)
Implementing an Asynchronous Control Plane for Apache Spark Using a RESTful API and a Test-Driven React UI Implementing an Asynchronous Control Plane for Apache Spark Using a RESTful API and a Test-Driven React UI
The initial request was straightforward: allow data scientists to run their ad-hoc Spark jobs without direct SSH access
2023-10-27 System Design
React Testing Library RESTful API Babel Asynchronous Processing Apache Spark System Integration
Building a Dynamic IAM Role Scoping Service with FastAPI for Pandas Data Processing in a Monorepo Building a Dynamic IAM Role Scoping Service with FastAPI for Pandas Data Processing in a Monorepo
The initial system was a security incident waiting to happen. A collection of Python scripts, glued together with cron,
2023-10-27 Cloud Security
Monorepo FastAPI Python IAM Security Pandas AWS
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