Webtagr - Technology News Summarizer

Postgres: Powering Scalable, Observable Durable Workflows

2025-08-09

This blog post delves into the technical reasons behind DBOS's choice of PostgreSQL as the metadata store for their durable workflow library. PostgreSQL's concurrency control, specifically its locking clauses, solves contention issues in database-backed queues, enabling scalability to tens of thousands of workflows per second. Its relational data model and secondary indexes simplify the development of observability tooling for real-time monitoring and visualization of workflow execution. Furthermore, PostgreSQL transactions guarantee exactly-once execution semantics for database operations, preventing duplication. PostgreSQL's features make it ideal for building robust and performant durable workflow libraries.

(www.dbos.dev)

Development Durable Workflows

The Evolution of Application Architecture and the Rise of Lightweight Orchestration

2025-03-22

From the three-tier architecture of the 90s to today's microservice-driven world, application architecture has undergone a dramatic transformation. To coordinate operations in distributed backends, the orchestration tier emerged. However, existing DIY solutions are complex and hard to maintain, while dedicated orchestration systems introduce their own complexities. This article presents a new approach: integrating orchestration functionality into a lightweight library and using a database to persist execution state. This eliminates the separate orchestration tier, simplifying development, testing, and debugging, ultimately leading to more reliable and efficient application architectures.

(www.dbos.dev)

Development Application Architecture Orchestration

Lightweight Durable Execution: The DBOS Transact Open-Source Library

2025-02-03

Traditional durable execution relies on external orchestrators like AWS Step Functions, adding complexity to development and deployment. DBOS Transact is a lightweight open-source library that integrates durable execution into the program itself, eliminating the need for external orchestrators. It achieves durable execution by persisting the program's execution state in a Postgres database, allowing automatic recovery to the point of interruption even if the program crashes or restarts. DBOS Transact also provides additional features such as durable sleep, durable messaging, and durable queues, further simplifying the development of reliable, stateful programs.

(www.dbos.dev)

Development

EZRGB: Powering Animated Holiday Light Shows with DBOS

2024-12-25

EZRGB uses DBOS to simplify the creation and deployment of animated holiday light shows. Their EZSequence platform allows users to purchase pre-made sequences and automatically map them to their house layouts, eliminating the complex manual process. Built with WordPress, DBOS Transact, AWS SQS, and S3, the platform offers a scalable and reliable solution, proving that even a niche market can benefit from robust technology.

(www.dbos.dev)

Development animated light shows cloud services