Questions tagged [redis]

open-source, networked, in-memory, key-value data store

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4
votes
1answer
562 views

Managing setTimeouts and setInterval in a distributed environment

I am building a turnbased game on nodejs using socket.io and redis as the datastore. I am planning on hosting the game on AWS opsworks with the ability to scale by adding more nodes. How should I ...
1
vote
1answer
1k views

Storing primary keys of objects in Redis and then querying them in Postgres through Django

This is probably my second time posting in programmers. I'm usually on stackoverflow but this question is more fit for the community here. All suggestions, advice and insight on this matter is ...
3
votes
0answers
1k views

How to tell SignalR Notifications Hub that there is a new notification without having SignalR poll on that table

I'm developing a push-notifications system for my ASP.NET MVC app. The idea is to use Redis for queueing, ServiceStack for queue processing and SignalR for push-notifications to implement a system ...
0
votes
1answer
659 views

Backing up messages in S3 within a Storm topology

In my project we are trying to build up a KIND-of-a-lambda storm based architecture. The component would be responsible for indexing the site usage events so we expect a quite massive random load. The ...
29
votes
3answers
23k views

How to implement a message queue over Redis?

Why Redis for queuing? I'm under the impression that Redis can make a good candidate for implementing a queueing system. Up until this point we've been using our MySQL database with polling, or ...
0
votes
1answer
607 views

Redis & MongoDB for Metrics Platform

I'm in the process of writing an app that will ultimately display analytics to the user. I've written a service that collects data from an API. This data will then be processed, stored, then when the ...
4
votes
2answers
3k views

Redis strategy for activity log data

Our application requires an activity log of actions that a user has done. For example: 3/19/2013 ------------- 9:37 AM Chuck Norris scrapped 3 robots. 9:15 AM Chuck Norris fought 3 robots. ...
1
vote
1answer
487 views

2 Servers 1 Database - Can I use Redis?

Ok I have a couple of questions here. First let me give you some background information. I'm starting a project where I have a node.js server running my application and my website running on another ...
2
votes
1answer
250 views

In-memory DB to perform intersects on set slices

I have a specific programming need where I need to efficiently store large sorted sets in memory, query them for ranges, and intersect them against other sets that are also queried for ranged. I am ...
2
votes
1answer
1k views

How would you use Redis for Exception Handling?

I was reading this transcript of an interview with a GitHub developer and he was describing how they use Redis: Q: You mentioned using Redis. How do you use that? A: We use Redis for exception ...
3
votes
1answer
1k views

Querying key/value store

I don't know whether this question is reasonably answerable (and therefore will be closed), but I will take my chances: What are the possible problems (and solutions), one might encounter, when ...
2
votes
1answer
223 views

Semi-securely storing data in a remote key-value store, ensuring minimal data corruption/tampering

I'm bashing around a few ideas for storing usage data (similar to google analytics) for some Javascript products that we are working on. Unfortunately as yet we don't quite know 100% what data we ...
25
votes
1answer
15k views

Redis vs Zookeeper

It seems silly to compare these two servers considering that they're meant for very different things. But if you think about it, they can do lots of similar things: store configuration data, ...