Tux Machines

today's howtos

Posted by Roy Schestowitz on Dec 13, 2022

Open Access and Free Software

Try this Linux web browser as your file manager

Day 56: Container queries

↺ Day 56: Container queries

> You can use media queries to style elements based on features of the browser viewport, for example, min-width, max-height, or orientation. With container queries, you can now do the same but with any parent element. Instead of the viewport, you can now listen to properties and features of a containing element.

Kill Process Running on a Specific Port in Linux

↺ Kill Process Running on a Specific Port in Linux

> Killing a process in Linux usually involves using the process ID with the kill command. You can also use the process name with killall command.

Snowflake IDs in Mastodon (and Unique IDs in the Fediverse more generally)

↺ Snowflake IDs in Mastodon (and Unique IDs in the Fediverse more generally)

> This becomes a problem at scale. If you have millions of users on hundreds of different shards of a database, eventually you'll get a clash of IDs. To that end, Twitter invented Snowflake IDs.

> Snowflakes are pretty clever. They are a 64 bit ID. The first part of the ID is a timestamp, and the second part is some information about the server which generated the ID. This means that IDs can be sorted by time, and will globally unique.

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