Quick answer: A circuit breaker is a state machine with three states: closed, open, and half-open. When the downstream dependency fails enough times, the breaker opens and the client gets a fast failure without hammering the broken service. After a cool-down it moves to half-open and lets a trial request through. To test client behavior honestly, mock the full sequence rather t...
A user uploads a photograph, your application generates a smaller preview, and everything appears to work perfectly.
The image loads quickly. The dimensions are correct. The thumbnail looks sharp.
But there's a problem: the preview may still contain metadata from the original photograph...
Most advice about coding agents is about what you type. But by the time you type your first prompt, the agent's context window is already partly full: instruction files, memory, tool names, skill descriptions. Then every file it reads, every test run and every long log adds more, and all of it is re-sent with every request.
That matters for more than your bill. In
Every "which tool is better" poll on the internet has the same problem: the result says more about who brought the most bots and alt accounts than about what people actually use.
So I built Pollreal: 2–4 candidates, 24 hours, and every vote is one verified human.
The name log_hostname suggests that this setting puts the client address into PostgreSQL's server log. It does not: the address comes from %h in log_line_prefix. What log_hostname adds is a DNS lookup at the start of every new connection. We explain how the two settings work together, and we show what that lookup cost on PostgreSQL 18 when DNS was healthy, slow and...
I added a sort direction to a product search endpoint last week, and when I went to type the parameter I realized the handler already had five in front of it. Search, category, sort field, page, page size, and now a descending flag. The signature had become one of those declarations that wraps onto three lines and makes you scroll sideways to find the closing brace. Nobody decided ...