guyben d87f01e7bf Fetch data from Cloud DNS in parallel ... Before pushing an update to Cloud DNS, the CloudDnsWriter needs to read all the domain RRSs from Cloud DNS one by one to know what to delete. Doing so sequentially results in update times that are too long (approx 200ms per domain, which is 20 seconds per batch of 100) severely limiting our QPS. This CL uses Concurrent threading to do the Cloud DNS queries in parallel. Unfortunately, my preferred method (Set.parallelStream) doesn't work on App Engine :( This reduces the per-item time from 200ms to 80ms, which can be further reduced to 50ms if we remove the rate limiter (currently set to 20 per second). ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=178126877		2017-12-13 12:43:45 -05:00
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com/google/testing/builddefs	Update copyright year on all license headers	2017-02-02 16:27:22 -05:00
google/registry	Fetch data from Cloud DNS in parallel	2017-12-13 12:43:45 -05:00