Files
fizzy/app/controllers/cards/readings_controller.rb
T
Kevin McConnell bd259f7795 Add optimistic pausing to avoid stale reads
Instead of writer pinning, we'll track the last transaction ID of each
write in the session. Then on each read we'll wait for the replica to
report that this transaction is available.

If it doesn't become available within a reasonable timeout, we'll
proceed anyway, and accept the possibility of a stale read.

The hope here is that most of the time, the replica is caught up in the
time between a write request and the following read request. If it's
not, we now have a little tolerance to wait for it, which hopefully
proves enough to stale reads are not encountered in normal use.

We also disable the writer affinity opt-out mechanism that we had
before, since we will no longer be using writer affinity at the load
balancer.
2025-11-24 13:29:52 +00:00

19 lines
361 B
Ruby

class Cards::ReadingsController < ApplicationController
include CardScoped
def create
@notifications = @card.read_by(Current.user)
record_board_access
end
def destroy
@notifications = @card.unread_by(Current.user)
record_board_access
end
private
def record_board_access
@card.board.accessed_by(Current.user)
end
end