Given parsoid doesn't receive traffic from the public, and the fact we've noticed huge performance gains when using php 7.4 for parsing, we want to transition parsoid ASAP.
This would go as follows:
- First we'll transition scandium, the parsoid test server, to use php7.4. @ssastry please let us know when that would be acceptable for your team. Ideally we'd like you to run a full batch of tests before we move any traffic too.
- Then we'll start installing the new parse1* servers with php7.4 only, and progressively add them to the rotation, removing the old servers in the process. This will allow us to move traffic by 4% chunks (1/24)