UUIDv7 or bigint in PostgreSQL: arrival order matters too
A Docker comparison of bigint, UUIDv4 and UUIDv7: insert time, index size, WAL and arrival order. Includes measured results and runnable code.
Blog / Matteo Vincenti
Notes from work.
I write about AI in everyday work, software development and how teams work together. I start with business problems and explore the technical decisions.
6 articles in Docker
Topic: Docker Clear topic
Debugging with an AI agent: challenge the diagnosis before fixing the code
Reproduce a JavaScript date bug in Docker, distinguish two diagnoses and preserve regression tests before asking an AI agent to patch the code.
Prompt injection: what can leave an agent’s environment
Follow a hostile proposal through a data transfer. A Docker lab separates file access, network reachability, recipients and legitimate work.
Harness engineering: which controls an agent actually needs
A Docker lab shows how an agent harness controls permissions, retries, budgets and evidence, and when to choose an existing runtime.
Code review with AI agents: when a pull request is ready
A small pull request can pass its tests and still be wrong. A Docker example shows how to expose the defect, fix it and explain the acceptance decision.
Stateful agents: recovering from a crash without duplicating actions
A Docker lab with LangGraph shows what runs again after a crash and how checkpoints and idempotency keys prevent duplicate tickets.
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