Questions tagged [redis]
Redis is an open-source, networked, in-memory, key-value data store.
62 questions
4
votes
1
answer
94
views
Simple Redis implementation in Rust
This is a very tiny implementation of Rust that uses redis serialization protocol (RESP). I implemented it as one of code crafters challenges. I have less than a few month experience in Rust, so it ...
- 267
2
votes
1
answer
821
views
Parallel handling db queries is very slow in C#
I have SignalR app that publishes sent messages to Redis. My console app subscribe to channel where these messages are sent, deserializes it and saves in database.
Problem is with handling these ...
- 161
1
vote
0
answers
77
views
Two steps changing email system Django + Redis
I created a two steps changing email system. Firstly I show you the concept how it should work and then the code. I am using Django and React.
Main question: is it a good way to do it? Is it fine to ...
2
votes
1
answer
978
views
Redis Output Cache Store refactoring - IOutputCacheStore Redis Implementation
This code incorporates the new .NET 7 Output Caching. I would like to get some refactoring tips on the RedisOutputCacheStore class.
How to use
...
- 779
1
vote
1
answer
436
views
Asp.Net Core CacheKey Management
I created cache management structure for Asp.Net Core and Redis. But i dont know is this best practices or bad.
My Github Repo
First one is Store my entity keys class is
...
- 13
1
vote
0
answers
381
views
Python and redis. Make queries more efficient
My Python code (part of a Django site) queries data from a redis database and loads it into a Pandas dataframe. I'm new to redis, and I think I'm not using the redis library as efficiently as I could.
...
- 285
2
votes
0
answers
27
views
Scalability of azure redis example
I built an auction site with a dynamic caching layer after I seeing how expensive a dbaas is. The site is now done, but like any site that grows, my caching solution grew too. The cache currently ...
- 121
2
votes
0
answers
33
views
Profiling redis RTT in go
I'm trying to determine best case round-trip times to a redis server. Particularly, I am trying to determine exactly how low I can get the latency on a local instance.
On a technical level, this is ...
- 121
1
vote
0
answers
48
views
Memoization of slow URL get requests
Purpose of this small module is to allow memoization of slow URL get requests. I intend to send many of these to download a bunch of files from internal (rather slow, old) website. Some requests may ...
- 173
5
votes
1
answer
14k
views
Dependency Injected StackExchange.Redis Client
I am currently building cache for my application, and I would like to have my redis cache client work the same way you would dependency inject a DbContext.
I am using StackExchange.Redis to manage my ...
- 53
5
votes
0
answers
841
views
Docker-compose for task-based Flask API with Redis and rq
I am not a Docker guru or expert in Flask or Redis. However, I need to leverage these technologies. I managed to cobble something together that works and would like to submit it for review.
The MWE ...
- 281
2
votes
1
answer
435
views
Redis work queue processor
I frequently encounter the need for creating services that concurrently process messages from Redis queues. So I decided to share the knowledge I learned and help others easily bootstrap such a ...
- 65
2
votes
0
answers
2k
views
Singleton pattern for Redis connection
Recently I have learned about singleton design pattern. I have tried to implement Redis connection following singleton design pattern.
conn/redis.go
...
- 225
4
votes
2
answers
8k
views
Accessing a subset of keys from a nested dictionary in Python
I am trying to access data from Coinmarketcap API in Python and came up with the following code:
...
- 143
4
votes
1
answer
88
views
Fetching and storing new reddit posts
I've created a small tool that fetches and stores the newest self-posts from a specific subreddit. The posts are stored in a redis store.
I'm going to write another couple of applications at a future ...
- 143
4
votes
1
answer
593
views
One minute cron Python script reads from MySQL and updates Redis based on calculations
The following code works and will be put into cron on a AWS server (not sure what specifications, cores, kernels etc) at a every 1 minute frequency.
However, it's my first time putting a script into ...
- 41
1
vote
1
answer
952
views
Write millions of lines to a file - Python, Dataframes and Redis [closed]
I have the following code snippet that reads a CSV into a dataframe, and writes out key-values pairs to a file in a Redis protocol-compliant fashion, i.e. ...
- 127
2
votes
1
answer
106
views
Web scraper extracts zip files and publishes them to redis
I wrote this program for a job interview a while back. I would like general feedback on style, readability, maintainability, or any obvious flaws:
...
- 179
2
votes
0
answers
389
views
Redis lua - game leaderboard "overview"
Here is the code I invoke as Lua script in Redis. I use Redis sorted set to store game scores. This function is used to get some kind of overview of leaderboard. It returns id, score and rank of:
...
- 121
1
vote
1
answer
819
views
GET and POST with Flask - optimum performance
I have this code to POST and save a digest to redis, and retrieve it from redis on a GET. This uses Python and Flask, of course.
...
- 279
3
votes
1
answer
892
views
Redis lookup with a default value
I have some code to perform a redis lookup, but if the key to look up either doesn't exist or there's an issue connecting to Redis at all, it will use a default value.
The logic currently looks like ...
- 197
7
votes
1
answer
251
views
Python Flask webserver with small features
With the latest of my projects, I started using Visual Studio Code, which allows for Python linting and also checking for poor practices, such as using over 100 characters in a single line. As you ...
- 501
0
votes
1
answer
114
views
List User Online Status
I'm using Rails with MongoDB for database. In my apps I have 1 action for displaying list of users. User has name, image, ...
- 269
2
votes
1
answer
3k
views
Spring Data Redis - mapping object relationships?
I'm designing an app that will process a set of social media messages which are posted by users. Each message is then scored and there is a reporting layer that will spit out a set of reports. The app ...
- 123
2
votes
1
answer
582
views
Redis lock implementation
Considering I'm not implementing distributed lock mechanism, is this code correct and clear?
...
- 184
2
votes
1
answer
1k
views
Redis protocol implementation by Kotlin
I have created my first project on the github. It is Redis client protocol implementation (request-responce part only). I would like to make my sources more Kotlin style. Please, check my sources and ...
0
votes
1
answer
157
views
Game Data Client: Go based Game server
In my previous question I asked how could the Redis client be improved.
Here I will ask how can the Game data Client can be improved. Game Data client sits on top of Redis Client and uses datatypes ...
- 221
2
votes
1
answer
211
views
4
votes
1
answer
69
views
GET event handler
I'm working on my first NodeJS / Express application with the async module. It's been an uphill battle for me learning node (and even JavaScript) as I go along so I'm sure there's a lot of room for ...
- 141
4
votes
0
answers
440
views
2-tier c# cache
I have slightly altered Marc Gravells 2-tier cache code which can be seen here. I changed it to use Stackexchange.Redis instead of Booksleeve and also added some retry logic and serialization.
...
- 141
2
votes
1
answer
802
views
Depersonalisation via redis cache
In an Azure Function, I have a c# program that processes tab delimited data into JSON entries. I'd like to improve it in terms of performance and the connection management.
I want to remove personal ...
- 123
4
votes
1
answer
448
views
Server setup script for Redis, HAProxy and Node.js
I wrote a pretty basic setup script that handles most of the setup for a Three-server solution. The solution and setup file are available on GitHub
The three servers are Redis, HAProxy and Node / ...
- 11.9k
1
vote
2
answers
492
views
Small C++ thread pool
I've made a small thread pool that i'll be using to communicate with a Redis server:
...
- 153
2
votes
1
answer
4k
views
Singleton method for Redis connection in Python
Here's my class for providing a singleton instance of a Redis connection. What do you think?
...
- 121
2
votes
1
answer
928
views
NodeJS script to dump data from Redis to Elasticsearch
I have about a million records in Redis which I want to dump into Elasticsearch periodically. I just want to make sure that my script is decent enough in terms of speed and no memory leaks.
...
- 813
2
votes
2
answers
291
views
Silly redis implementation
This is a silly Redis implementation that handles only three commands: INFO, ECHO, PING.
The implementation is based on streams:
...
- 779
1
vote
1
answer
64
views
Store and output hard-coded relationships among hosts
The following code has begun to smell, but I have not yet decided with what to replace it, other than, obviously, a database.
I made a very unsatisfactory workaround for my attempt to make ...
- 111
3
votes
3
answers
132
views
6
votes
1
answer
322
views
Tornado chat with SockJS and Redis
I have Tornado chat with export to Redis. Other scripts will export messages from Redis to MongoDB in the time. It works, but how is it written?
...
- 163
3
votes
1
answer
953
views
API to verify whether a Redis entry exists
I come from a PHP object oriented framework background (Laravel, Symfony, Silex...). With that, validation comes in pre-built classes mechanism in a framework that validates for you parameters that ...
- 1,210
2
votes
0
answers
1k
views
Node.js and Redis based chat application
I have been worked on creating a chat tool similar to vk.com. Right now I have done a simple chat which requires only authentication via a PHP website and everyone can chat with each other. I used the ...
- 121
4
votes
1
answer
12k
views
Redis Object storage and conversion
I am stepping into a new realm with this project, Reflection. I have written some working code (below) that will potentially store POCO objects in a redis cache (and eventually backed by Table or ...
- 137
7
votes
2
answers
938
views
Sum-based sliding rate limiting with Redis and Lua
As I'm new to Redis, I would like to get a review / improvement suggestions from Redis / Lua experts on the following problem and the solution I have found so far.
Problem
The context is: an e-...
- 123
4
votes
0
answers
85
views
Token generating library on Redis
This is a token generating library for Go that runs on top of Redis. I'm using it as part of a larger projects. The library needs to be able to generate and validate tokens and return the associated ...
- 41
7
votes
2
answers
5k
views
Redis Message Queue (Cloud)
I am in the process of writing a Cloud application (mostly hobby, learning) that required a very quick cache, queue, and messaging system. I have looked at a few different options from Microsoft (...
- 137
4
votes
1
answer
93
views
Game boot to some operations every second
I am building game, like Ogame, or Ikariam where you can play with other users in real-time. You train some soldiers, and build some vehicles or buildings. Every building or vehicle has some level. If ...
- 183
3
votes
1
answer
9k
views
Cached-object Store c# with Redis client for persistent storage
I have written a Cached-Object store with a Redis Client for persistent storage. The application that is going to use this is a heavy read application with the occasional write. I assume that entire ...
- 205
3
votes
1
answer
7k
views
Spring oauth2 token store supported by redis
I had to make a demo for Spring oauth2 with redis store for tokens. Started with the sparklr2 (with tonr2) sample app from here. They are demo apps to show oauth2 powered by spring. Sparklr is the ...
- 223
3
votes
1
answer
5k
views
Redis Cache Data source code - Retrieve/Set/Invalidate actions
This is my RedisDataSource code. What I am mainly interested in is how the retry policy could be improved and if using WindowsAzure Trainsient Fault Handling this case (using Redis Azure Cache) makes ...
- 133
7
votes
1
answer
11k
views
Async distributed locking with StackExchange.Redis [closed]
I have been trying to write an analogy to this approach to distributed locking with two differences:
making it asynchronous
making it work with StackExchange.Redis rather than AppFabric Cache.
My ...
- 123