- Testing
Resources https://flask.palletsprojects.com/en/1.1.x/testing/
- Postgres – Schema Migrations Without Downtime
The DDL that takes a lock long enough to be an outage, and the version of the same change that does not. Adding a column with a default, adding NOT NULL in two steps with a validated CHECK, CREATE INDEX CONCURRENTLY and the invalid index it can leave behind, renaming a column across two deploys, and lock_timeout — the one setting that turns a migration from an outage into a retry.
- Elasticsearch – The Field Types That Matter
Not a catalogue. The eight or so types a real project actually needs and the decisions behind them: text versus keyword and why that one distinction causes most beginner confusion, scaled_float for money, date and what it accepts, boolean, geo_point, and object versus nested — including the array-flattening behaviour that makes nested necessary and is invisible until it returns a wrong result.
- Visual Studio Code Hot Keys
Search Search for file in your space Windows CTRL + P Mac command + P
- HTML SEO
Title Description Social Media Tags Viewport metadata <meta name=”viewport” content=”width=device-width, initial-scale=1″/>