Logan Saso
Staff Software Engineer, C1
Logan Saso is a Staff Software Engineer at C1, writing on the engineering blog about databases and performance — Postgres query planning, DynamoDB throughput — and about the internal tooling C1 builds for itself.
4 articles by Logan Saso
- Engineering
How IS NULL broke our query plan estimates in Postgres
Our query generator emitted the same `deleted_at IS NULL` clause more than once, and Postgres multiplied the selectivity of every copy. The row estimate collapsed, the planner picked the wrong plan, and a 293ms query took 50 seconds. Here's the bug, and the patch we sent to pgsql-hackers.
- Engineering
Scaling Dynamo throughput via PK Sharding
How we scaled DynamoDB throughput at C1 by implementing calculated partition key sharding. A deep dive into our solution using protoc-gen-dynamo, hash-based shard distribution, and parallel read strategies to break through DynamoDB's per-partition limits while maintaining developer ergonomics.
BlogSquire: Agentic-First Ephemeral Dev Environments at C1
How C1 built Squire, an agent-first ephemeral development environment where AI agents operate on real, running instances of the product. Learn about the workflow engine, CLI, Slack integration, and how we're operationalizing the agentic enterprise internally.
BlogIntroducing Baton Feeds
Learn all about Baton feeds, Baton's newly released low-latency streaming capability. In this dev blog, we cover how feeds works, how to add it to a Baton connector, and the new functionality it enables.