25,507 questions
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16
views
Hibernate (5.3.3.Final) + Redisson (3.17.7) in a SBT project isn't evicting the cache from redis based on configured TTL
I am using a java-scala project and have configured the RedissonClient programmatically:
public class RedissonConfigurationFactory extends RedissonRegionFactory{
private static RedissonClient ...
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0
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43
views
Doesn’t a distributed lock still require waiting in the end?
There are many articles suggesting the use of Redis-based distributed locks in concurrent environments.
But in the end, don’t they still require waiting?
Let’s say we’re using a Spring Boot ...
- 43
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22
views
Unable to connect Redis to Odoo 19
I am using Odoo 19 on an Ubuntu 24.04.3 LTS VPS server. I tried to use Redis for caching, but it is not working. I followed the steps below.
sudo apt install redis-server -y
sudo systemctl restart ...
1
vote
1
answer
26
views
An object with a Redis object in its attribute can't be serialized. How to modify it for serialization without delaying the connection?
When writing a multi-process program for web scraping, I passed an object of my custom RedisQueue class as an argument to the multi-process task function. This class contains a Redis object as one ...
- 11
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37
views
Redis data structure and storage optimzation
I have an application which keeps appending data for a wide range of sessionIDs and expiring them in a few hours, currently we use Redis List data structure and having the SessionID as the key.
For ...
-1
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0
answers
32
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Storing 300 rows of data in node-cache [closed]
I have an array of books that I store in node-cache instead of querying the database. Now I'm getting the error Error R14 (Memory quota exceeded) on heroku. Can I store large arrays of data in redis? ...
- 1,959
1
vote
1
answer
26
views
Spring - Cache - Concurency issue
I have this cache
@Cachable(cacheName = CACHE_MY_CACHE, key="#param", sync=true)
public Object doStuff(String param){
...
}
Which is using Redis in the background so it's distributed ...
- 307
0
votes
1
answer
42
views
Trying to use connect-redis but getting an error
I have the following code
const session = require("express-session")
const { createClient } = require("redis");
const RedisStore = require("connect-redis").default;
// ...
- 1,959
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answers
20
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ioredis not catching ERROR [ioredis] Unhandled error event: Error: read ECONNRESET
I have a Vue+Nuxt app that uses Redis as cache. It's is setup in the following files.
server/plugins/redis.js
import redis from "unstorage/drivers/redis";
import Redis from 'ioredis';
...
- 27
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15
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RediSearch: How to perform prefix search on email addresses with dots and special characters?
I'm using RediSearch 8.2.1 with the following index schema:
FT.CREATE contacts_idx ON HASH PREFIX 1 "contact:"
SCHEMA
id NUMERIC SORTABLE
name TEXT NOSTEM SORTABLE
email TEXT ...
2
votes
1
answer
77
views
SpringBoot application: Redis connection refused when running in Docker, works locally
Why does Spring Boot try to connect to localhost:6379 when running inside Docker, even though I set
SPRING_DATA_REDIS_HOST=app-redis in the environment variables?
How can I make it connect to the ...
- 21
1
vote
2
answers
71
views
Redis GETRANGE command strange behavior with negative indexes
If I have a key k1 with value "abcde", then why does GETRANGE k1 0 -100 returns "a"? I would think empty string would be returned since start index > end index (even after ...
- 1,674
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votes
0
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65
views
Jackson (de)serialization with redisTemplate
A user has roles, and the serialized version that is stored in Redis is:
"{\"@class\":\"package.User\",\"id\":null,\"email\":\"[email protected]\&...
1
vote
1
answer
43
views
Java Redison tryLock vs getBucket performance
I am using global redis datastore, with two clusters Region-A and Region-B.
Each regional cluster has three redis nodes one primary and two read replicas.
I have my service deployed in two regions as ...
- 2,303
1
vote
0
answers
46
views
Airflow 3.1. + CeleryExecutor in Docker Compose: DAGs stuck in `queued`, tasks never sent to workers
I’m trying to run Apache Airflow 3.1. with the CeleryExecutor using Docker Compose (together with Redis + Postgres).
My problem is, when I trigger a DAG (directly over the command line or how it's ...
- 1,651