twemproxy | A fast , light-weight proxy for memcached and redis | Proxy library

by twitter C Version: 0.5.0 License: Apache-2.0

X-Ray Key Features Code Snippets Community Discussions(3)Vulnerabilities Install Support

kandi X-RAY | twemproxy Summary

twemproxy is a C library typically used in Networking, Proxy applications. twemproxy has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

twemproxy (pronounced "two-em-proxy"), aka nutcracker is a fast and lightweight proxy for memcached and redis protocol. It was built primarily to reduce the number of connections to the caching servers on the backend. This, together with protocol pipelining and sharding enables you to horizontally scale your distributed caching architecture.

Support

Quality

Security

License

Reuse

Support

twemproxy has a medium active ecosystem.

It has 11805 star(s) with 2056 fork(s). There are 821 watchers for this library.

It had no major release in the last 12 months.

There are 148 open issues and 286 have been closed. On average issues are closed in 993 days. There are 43 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of twemproxy is 0.5.0

Quality

twemproxy has 0 bugs and 0 code smells.

Security

twemproxy has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

twemproxy code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

twemproxy is licensed under the Apache-2.0 License. This license is Permissive.

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

Reuse

twemproxy releases are available to install and integrate.

Installation instructions, examples and code snippets are available.

It has 1528 lines of code, 149 functions and 19 files.

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

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twemproxy Key Features

No Key Features are available at this moment for twemproxy.

twemproxy Examples and Code Snippets

No Code Snippets are available at this moment for twemproxy.

Community Discussions

Trending Discussions on twemproxy

Replacing local redis server with a new redis server in redis-brain

Redis Cluster vs Twemproxy - MOVED responses

Twemproxy Lag Forces a Restart

QUESTION

Replacing local redis server with a new redis server in redis-brain

Asked 2019-Feb-27 at 20:52

I'm currently trying to build a slack bot using Hubot and I need to persist some things on Redis. I'm using the following script from https://github.com/hubotio/hubot-redis-brain

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ANSWER

Answered 2019-Feb-27 at 20:52

Seems like you can have no code changes but set the environment variable REDIS_URL to the URL for your Redis instance.

Source https://stackoverflow.com/questions/54912709

QUESTION

Redis Cluster vs Twemproxy - MOVED responses

Asked 2018-Nov-01 at 10:01

I want to use Redis for a particular use case. I am not sure to go with a Redis Cluster or with Twemproxy + Sentinel.

I know the Cluster is a winner any day. I am just skeptical due to the MOVED responses. In case of MOVED responses, the client will connect another node and in case of resharding, it may have to connect another again. But in case of Twem, it knows where the data is residing, so it will never get a MOVED response.

There are different problems with Twem, like added hop, may increase overall turnaround time, problem with adding new nodes or if it ejects some nodes out, it won't be able to serve the requests for the keys present on that node. Extra maintenance headache as in, having sentinels for my Redis instances and mechanism for HA of twem itself.

Can anyone suggest me, should I go with Twem or Cluster? I am thinking of going with Twem as I will not be going to and fro in case of MOVED responses. But I am skeptical about it, considering the above mentioned concerns.

P.S. I am planning to using Jedis client for Redis (if that helps).

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ANSWER

Answered 2018-Nov-01 at 10:01

First of all, I'm not familiar with Twemproxy, so I'll only talk about your concerns on Redis Cluster.

Redis client can get the complete slot-node mapping, i.e. the location of keys, from Redis Cluster. It can cache the mapping on the client side, and sends request to the right node. So most of the time, it won't be redirected, i.e. get the MOVED message.

However, if you add/delete node or reshard the data set, client will receive MOVED message, since it still uses the old mapping. In this case, client can update its local cache, and any subsequent requests will be sent to the right node, i.e. no MOVED message any more.

A decent client library can take the above optimization to make it more efficient. So if your client library has this optimization, you don't need to worry about the MOVED penalty.

Source https://stackoverflow.com/questions/53097923

QUESTION

Twemproxy Lag Forces a Restart

Asked 2017-Feb-15 at 17:55

We are running a PHP stack on our app servers which use twemproxy locally (via socket), to connect to multiple upstream memcached servers (EC2 small instances) for our caching layer.

Every so often I get an alert from our app monitor that a page load time takes > 5 seconds. When this occurs, the immediate fix is to restart the twemproxy service on each app server, which is a hassle.

The only fix I have now is a crontab that runs every minute and restarts the service, but as you can imagine nothing gets written for a few seconds every minute, which is not a desired, permanent solution.

Has anyone encountered this before? If so, what was the fix? I tried to switch to AWS Elasticache but it didn't have the same performance as our current twemproxy solution.

Here is my twemproxy config.

...

ANSWER

Answered 2017-Feb-10 at 13:19

The number of open / stale socket connections may be the issue

Source https://stackoverflow.com/questions/41989898

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

Vulnerabilities

No vulnerabilities reported

Install twemproxy

To build twemproxy 0.5.0+ from distribution tarball:.
Use newer version of gcc (older version of gcc has problems)
Use CFLAGS="-O1" ./configure && make
Use CFLAGS="-O3 -fno-strict-aliasing" ./configure && make
autoreconf -fvi && ./configure needs automake and libtool to be installed