This patch improves check_token validation performance by only pulling
revocation events based on the token issued_at value, taking advantage
of the table index. In this way, only a subset of relevant events will
be returned for validation.
Benchmarks can be seen at [1], but included here as well:
Time per Request for Old Method
-------------------------------
10 revokes at 7.908
100 revokes at 18.224
1,000 revokes at 110.155
10,000 revokes at 1998.220
Time per Request New Method
---------------------------
10 revokes at 17.636ms,
100 revokes at 17.279ms,
1,000 revokes at 17.370,
10,000 revokes w/all revokes issued before token at 17.263 (best case)
10,000 revokes w/all revokes after token creation 44.934ms (worst case)
[1] https://gist.github.com/csrichard1/4b7b8527ee5a6565a84956cff33cf29b
Change-Id: I9c2f067d870d542ec5909eaf8b24ded07b75f433
Partial-Bug: 1524030
9e84371461