Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 3 years ago. Improve this question I have worked quite a bit with memcached the last weeks and just found out about … Read more
I understand that Redis serves all data from memory, but does it persist as well across server reboot so that when the server reboots it reads into memory all the data from disk. Or is it always a blank store which is only to store data while apps are running with no persistence? 7 Answers … Read more
I have read great things about key/value stores such as Redis but I can’t seem to figure out when it’s time to use it in an application. Say I am architecting a web-based application; I know what stack I am going to use for the front-end, back-end, database(s), etc..what are some scenarios where I would … Read more
I have URL and PORT of remote Redis server. I am able to write into Redis from Scala. However I want to connect to remote Redis via terminal using redis-server or something similar in order to make several call of hget, get, etc. (I can do it with my locally installed Redis without any problem). … Read more
I currently have a live redis server running on a cloud instance and I want to migrate this redis server to a new cloud instance and use that instance as my new redis server. If it were MySQL, I would export the DB from the old server and import it into the new server. How … Read more
Using homebrew to install Redis but when I try to ping Redis it shows this error: Could not connect to Redis at 127.0.0.1:6379: Connection refused Note : I tried to turn off firewall and edit conf file but still cannot ping. I am using macOS Sierra and homebrew version 1.1.11 19 Answers 19
Is there a way to print the number of keys in Redis? I am aware of keys * But that seems slightly heavy weight. – Given that Redis is a key value store maybe this is the only way to do it. But I would still like to see something along the lines of count … Read more
It’s widely mentioned that Redis is “Blazing Fast” and mongoDB is fast too. But, I’m having trouble finding actual numbers comparing the results of the two. Given similar configurations, features and operations (and maybe showing how the factor changes with different configurations and operations), etc, is Redis 10x faster?, 2x faster?, 5x faster? I’m ONLY … Read more
Trying to grasp some basics of Redis I came across an interesting blog post . The author states: Redis is single-threaded with epoll/kqueue and scale indefinitely in terms of I/O concurrency. I surely misunderstand the whole threading thing, because I find this statement puzzling. If a program is single-threaded, how does it do anything concurrently? … Read more
So, I’ve come to a place where I wanted to segment the data I store in redis into separate databases as I sometimes need to make use of the keys command on one specific kind of data, and wanted to separate it to make that faster. If I segment into multiple databases, everything is still … Read more
