jpablo

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21 日前議論

The power to send mass messages to a whole country is the worst thing google/apple have given to governments across the world.

jpablo

2 か月前議論

Darn. I don't know if I have been living in the wrong places but I never see drug-addicted homeless people in my western country at night.

jpablo

3 か月前議論

If you want a consistent backup that you can use to setup a replica you need to block writes while the backup is taken, take the backup while the database is shutdown OR use xtrabackup.

jpablo

3 か月前議論

The "making it catch up" is the tricky part. You need an initial backup for that. xtrabackup can take that backup "hot" without blocking read/writes. mysqldumper will block writes for whatever time that initial backup takes, for 2TB of data that's going to be hours.

Once you have that initial back up you can set your replica and make it catch up , then you switch. I choose to take the few seconds of downtime doing the switch because for my use case that was acceptable.

jpablo

3 か月前議論

  If you’re migrating a large MySQL database and you’re not 
  using mydumper/myloader, you’re doing it the hard way.

If you aren't using xtrabackup you are doing it wrong. I recently migrated a database with 2TB of data from 5.7 to 8.4 with about 15 seconds of down time. It wouldn't have been possible without xtrabackup. Mysqldumper requires a global write block, I wouldn't call blocking writes for hours a "zero downtime migration".

jpablo

3 か月前議論

https://en.wikipedia.org/wiki/Stalemate#History_of_the_stale...

jpablo

3 か月前議論

So basically VOIP?

jpablo

4 か月前議論

Yeah... that's way, way, way more complex than npm run dev

jpablo

6 か月前議論

You will be surprised of The Unreasonable Effectiveness of opencv.calcOpticalFlowPyrLK