Distributed writer-preferred rwlock, powered by Consul.
consul-rwlock provides a distributed read-write lock, using Consul
KV store to maintain the lock mechanisms. Consul KV CAS queries are
used in conjunction with blocking queries to provide atomic adjustment
of the read and writer counters. Writer starvation is avoided by preventing
readers from acquiring a lock when a writer is pending lock acquisition.
Exported functions are similar to those provided by the RWMutex made
available from sync, with the exception
that all functions return a possible error passed directly from the Consul
API. This allows for drop-in replacement of existing RWMutex code,
though replacement without error handling is strongly discouraged outside of
a playground.
See example/main.go for example usage.
Copyright 2019 Robert Paprocki.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.