readwrite lock implementation?

[Steve Johnson]

Can anyone tell me how to implement a readwrite lock via Consul?  That is, I want a lock that allows multiple readers but requires exclusive access for writing.

[Armon Dadgar]

Hey Steve,

Take a look at the guide on implementing a semaphore using Consul here:

https://consul.io/docs/guides/semaphore.html

A read/write lock is basically a semaphore with a “mode”. In the “write” mode the

limit is one, and in the “read” mode the limit is potentially infinite. You should be able

to follow the same basic steps with the extra nuance of specifying the lock mode in

the shared key.

Here is a Go implementation of the semaphore pattern as well:

https://github.com/hashicorp/consul/blob/master/api/semaphore.go

Best Regards,

Armon Dadgar

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[Armon Dadgar]

Hey Steve,

Take a look at the guide on implementing a semaphore using Consul here:

https://consul.io/docs/guides/semaphore.html

A read/write lock is basically a semaphore with a “mode”. In the “write” mode the

limit is one, and in the “read” mode the limit is potentially infinite. You should be able

to follow the same basic steps with the extra nuance of specifying the lock mode in

the shared key.

Here is a Go implementation of the semaphore pattern as well:

https://github.com/hashicorp/consul/blob/master/api/semaphore.go

Best Regards,

Armon Dadgar

From: Steve Johnson <blat...@gmail.com>
Reply: consu...@googlegroups.com <consu...@googlegroups.com>>
Date: December 9, 2015 at 12:10:49 PM
To: Consul <consu...@googlegroups.com>>
Subject:  [consul] readwrite lock implementation?