DanLevy.net | Come for the code, stay for the cats.

Your Timestamp is a Lie

What a train ticket taught me about storing time in databases

Your Timestamp is a Lie

created 11 months ago

updated 11 days ago

Stop Asking LLMs to Do Math

They are bad at it. Here is how to fix it.

Stop Asking LLMs to Do Math

created 17 days ago

updated 16 days ago

Stop Building Flaky Agents: Use Workflows & Memory

Deterministic patterns for non-deterministic models.

Stop Building Flaky Agents: Use Workflows & Memory

created 18 days ago

updated 15 days ago

Your AI Agent is Useless Without This

Why MCP is the USB-C of Artificial Intelligence.

Your AI Agent is Useless Without This

created 19 days ago

updated 15 days ago

Production AI is Terrifying (And How to Fix It)

If your agent doesn't have guardrails, you aren't ready for production.

Production AI is Terrifying (And How to Fix It)

created 20 days ago

updated 15 days ago

Don't Marry Your Model: The Case for LLM Routing

Why sticking to one provider is costing you money and quality.

Don't Marry Your Model: The Case for LLM Routing

created 21 days ago

updated 15 days ago

Foreign Keys: Stop Asking If They're Fast

Ask what you're actually optimizing for.

Foreign Keys: Stop Asking If They're Fast

created 25 days ago

updated 13 days ago

Stop Leaking Memory with WeakMap

Fixing weak code with weak references!

Stop Leaking Memory with WeakMap

created 25 days ago

updated 11 days ago