Jan 16, 2017
"Our first step was to gather some metrics and let them tell us what to do"
So, #GitHub migrated part of their K-V persistence from #redis to #MySql.
Which is cool, and a nice story about operationalizing migrations, and worth reading in it's own right.
The part that struck with me though was the bit about metrics above.
You'd (not?) be surprised how frequently people Just Do It because it's "intuitively obvious" - which is also how you end up with Code That Never Goes Away.
#Metrics - They're not just important, they're *necessary*!!
