redsync.go | * DEPRECATED * Please use https | Architecture library

by hjr265 Go Version: Current License: BSD-3-Clause

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kandi X-RAY | redsync.go Summary

redsync.go is a Go library typically used in Architecture applications. redsync.go has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Redsync.go provides a Redis-based distributed mutual exclusion lock implementation for Go as described in this blog post. A reference library (by antirez) for Ruby is available at github.com/antirez/redlock-rb.

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Support

redsync.go has a low active ecosystem.

It has 297 star(s) with 43 fork(s). There are 12 watchers for this library.

It had no major release in the last 6 months.

There are 4 open issues and 7 have been closed. On average issues are closed in 380 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of redsync.go is current.

Quality

redsync.go has 0 bugs and 0 code smells.

Security

redsync.go has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

redsync.go code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

redsync.go is licensed under the BSD-3-Clause License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

redsync.go releases are not available. You will need to build from source code and install.

Installation instructions, examples and code snippets are available.

It has 395 lines of code, 14 functions and 3 files.

It has high code complexity. Code complexity directly impacts maintainability of the code.

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redsync.go Key Features

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redsync.go Examples and Code Snippets

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Community Discussions

Trending Discussions on redsync.go

Single-instance Redis lock with SETNX

QUESTION

Single-instance Redis lock with SETNX

Asked 2019-Jun-13 at 23:59

I need to connect to a single Redis instance from an application client.

Since the client will be replicated in Kubernetes, I'm studying Redis documentation about locks to prevent races between the client replicas.

After some googling and reading around, I zeroed in on these two resources:

the SETNX command described here: https://redis.io/commands/setnx
the Redlock algorithm described here: https://redis.io/topics/distlock

Interestingly the SETNX docs explicitly advise against using SETNX to implement locks, stating that it has basically become obsolete:

The following pattern is discouraged in favor of the Redlock algorithm [...]

We document the old pattern anyway because certain existing implementations link to this page as a reference.

However the Redlock algorithm is specifically tailored for distributed locks, thus when one seeks to lock on multiple Redis instances - they actually refer to multiple masters.

To go a bit further, the library redsync (golang) declares the New function as follows:

...

ANSWER

Answered 2019-Jun-13 at 23:59

Yes, it's true that the Redlock algorithm is designed for a distributed Redis system, and that if you're using a single instance it should be fine to use the simpler locking methods described in the SET and SETNX documentation.

However, a more important point is this: you probably don't need to use locks to avoid conflicts between multiple Redis clients. Redis locks are usually used to secure some external distributed resource (see my answer here for a bit more on this). Within Redis itself locks are generally not necessary; thanks to Redis' single-threaded nature, many commands are already atomic, and you have the ability to use transactions or Lua scripts to compose arbitrarily complex atomic operations.

So my advice is to deisgn your client code to use atomicity to avoid conflict rather than trying to use a lock (distributed or otherwise).

Source https://stackoverflow.com/questions/56589374

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