redis-lock | redis单机版分布式锁

by qq315737546 Java Version: Current License: No License

X-Ray Key Features Code Snippets Community Discussions(2)Vulnerabilities Install Support

kandi X-RAY | redis-lock Summary

redis-lock is a Java library. redis-lock has no bugs, it has no vulnerabilities, it has build file available and it has low support. You can download it from GitHub.

redis单机版分布式锁

Support

Quality

Security

License

Reuse

Support

redis-lock has a low active ecosystem.

It has 14 star(s) with 14 fork(s). There are 2 watchers for this library.

It had no major release in the last 6 months.

redis-lock has no issues reported. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of redis-lock is current.

Quality

redis-lock has 0 bugs and 0 code smells.

Security

redis-lock has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

redis-lock code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

redis-lock does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

redis-lock releases are not available. You will need to build from source code and install.

Build file is available. You can build the component from source.

redis-lock saves you 136 person hours of effort in developing the same functionality from scratch.

It has 342 lines of code, 30 functions and 9 files.

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

Top functions reviewed by kandi - BETA

kandi has reviewed redis-lock and discovered the below as its top functions. This is intended to give you an instant insight into redis-lock implemented functionality, and help decide if they suit your requirements.

Unlock the key
Unlock a value
Unlock a full key
Returns the full key for the given key
Unlock a value
Get an instance of the managed redis
Release the given redis
Get lock value

Get all kandi verified functions for this library.

redis-lock Key Features

No Key Features are available at this moment for redis-lock.

redis-lock Examples and Code Snippets

No Code Snippets are available at this moment for redis-lock.

Community Discussions

Trending Discussions on redis-lock

How to avoid two concurrent API requests breaking the logic behind document validation?

redis locking: redispy vs python-redis-lock

QUESTION

How to avoid two concurrent API requests breaking the logic behind document validation?

Asked 2019-Jun-07 at 09:27

I have an API that in order to insert a new item it needs to be validated. The validation basically is a type validator(string, number, Date, e.t.c) and queries the database that checks if the "user" has an "item" in the same date, which if it does the validation is unsuccessful.

Pseudocode goes like this:

...

ANSWER

Answered 2019-Apr-11 at 10:04

You should create a composite index or a composite primary key that includes the id_user and the start_date fields. This will ensure that no documents for the same user with the same date can be created, and the database will throw an error if you'll try to do it. Composite index with mongoose

You could also use transactions. To do it, you should execute the find and the create methods inside a transaction, to ensure that no concurrent queries on the same document will be executed. Mongoose transactions tutorial

More infos

I would go with an unique composite index, that in your specific case should be something like

Source https://stackoverflow.com/questions/55629269

QUESTION

redis locking: redispy vs python-redis-lock

Asked 2018-Sep-21 at 23:04

Except that python-redis-lock module provides contextmanager for the lock object - what are the differences when compared to the lock object you get from redispy module? what is so special about python-redis-lock?

...

ANSWER

Answered 2018-Sep-21 at 23:04

I think the context manager is not the major difference here, because if you see code of redis-py Lock they have the __enter__ and __exit__ added in there.

Both the Lock's seem to use SETNX for acquiring the lock:

python-redis-lock: Github
redis-py Lock: Github

The major difference I saw in there was the way blocking the threads work.

In case of python-redis-lock they have been using BLPOP mechanism to block the thread, which to me seems like using redis's own version of blocking mechanism. Github code

Something like:

timed_out = not self._client.blpop(self._signal, blpop_timeout) and timeout

In case of redis-py they seem use time module and its sleep method to block the thread to check whether the blocking has timedout.

Something like:

Source https://stackoverflow.com/questions/52295704

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install redis-lock

You can download it from GitHub.
You can use redis-lock like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the redis-lock component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

Find more information at: