tree 95df4d7d389b33dbea881c7576bc7f9716572fee
parent b5d5c95a579c9550839df477090795d32c6c698b
author Keegan Carruthers-Smith <keegan.csmith@gmail.com> 1595238268 +0200
committer Keegan Carruthers-Smith <keegan.csmith@gmail.com> 1595238268 +0200

shards: throttle loading in watcher

By throttling in the watcher we can prevent spinning up N goroutines. On
large instances when starting up N can be very large. Additionally since
only one "scan" is running at a time, we can move the throttle semaphore
to a local variable.

We also rename throttledLoader to loader since it no longer does
throttling.

Change-Id: Ifece1d85b4d40f5a331369b3a9d7566cf08ce5e8