Why do we need message brokers like RabbitMQ over a database like PostgreSQL?

Rabbit’s queues reside in memory and will therefore be much faster than implementing this in a database. A (good)dedicated message queue should also provide essential queuing related features such as throttling/flow control, and the ability to choose different routing algorithms, to name a couple(rabbit provides these and more). Depending on the size of your project, … Read more

Linux – Install redis-cli only

Ubuntu (tested on 14.04) has package called redis-tools which contains redis-cli among other tools. To install it type: sudo apt-get install redis-tools Note that on Ubuntu 16.04+ the command is a little bit different: sudo apt install redis-tools

Is Redis just a cache?

No, Redis is much more than a cache. Like a Cache, Redis stores key=value pairs. But unlike a cache, Redis lets you operate on the values. There are 5 data types in Redis – Strings, Sets, Hash, Lists and Sorted Sets. Each data type exposes various operations. The best way to understand Redis is to … Read more

WSL Redis encountered System has not been booted with systemd as init system (PID 1). Can’t operate [closed]

Instead, use: sudo service redis-server start I had the same problem, stopping/starting other services from within Ubuntu on WSL. This worked, where systemctl did not. And one could reasonably wonder, “how would you know that the service name was ‘redis-server’?” You can see them using service –status-all

What are the underlying data structures used for Redis?

I’ll try to answer your question, but I’ll start with something that may look strange at first: if you are not interested in Redis internals you should not care about how data types are implemented internally. This is for a simple reason: for every Redis operation you’ll find the time complexity in the documentation and, … Read more

How can I stop redis-server?

Either connect to node instance and use shutdown command or if you are on ubuntu you can try to restart redis server through init.d: /etc/init.d/redis-server restart or stop/start it: /etc/init.d/redis-server stop /etc/init.d/redis-server start On Mac redis-cli shutdown

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)