How The Tech Are You 5 22 2023

Intro

Hello, how the tech are you?

This is our weekly tech show on Echoplex Media.

*Matt introduces himself and segment*

*HK introduces himself and segment*

Google supports .zip and .mov domains. Thus breaking the internet.

Two of those TLDs, .zip and .mov, may allow scammers new methods of scamming people.
These two TLDs are the same as widely used file extensions

Specially designed URLs could look legit while sending the user to a different domain entirely.

Meta introduces new MySQL Raft replication

This holds a special place in my heart, because I worked on the previous system as an SRE at Facebook.
Raft is a consensus protocol. What that means is that you can use Raft to let several distributed systems all agree on the same log.
Unlike the previous system, where only data was written to the log and pushed to a logtailer (called Tailer Swift at the time I worked there), Raft also handles leader promotion control.
MySQL replication works by having a leader where all the writes go through, then several followers that can all handle read requests.
The old system, the one I worked on, was a set of Python scripts that would promote a new leader when the current leader goes down.
This used to happen a lot. If you’ve ever tried to post something and it failed, but you tried again right away and it succeeded, your database shard may have been in the process of a promotion.
The new system handles leadership elections automatically when the current leader goes down.
Kudos to the team for developing this cool system and managing to migrate the entire live FB MySQL fleet to it.

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