Count redis queue length in docker
I have a Celery+Redis python application. I have to find number of tasks in queue. I trying this command, but the output is zero. I am confident that queue is not empty. redis-cli -n 1 -h localhost -p 6379 llen…
Redis – Delete all but one key
we are currently using this command from shell to purge our Redis DB: redis-cli -h zapi.data.com flushdb However, now I am being told that I have to delete all keys, except for the key that is "zrtt_industry". How can I…
Pipelining request/response with boost::redis
With the task in mind - do a HGETALL on all keys matching a pattern (potentially millions). I get keys on one connection and execute HGETALL concurrently on another connection. This still does not solve the HGETALL round trip latency,…
What is better in Redis, redundant data or read a bigger data object?
For some flows, I need to store an object like that in Redis: ObjectA: {id: X, name: 'a', age: 'b', surname: 'c', city: 'abc', state: 'cdb'} And in a specific flow that has a huge throughput, I just need to…
How do I delete a Redis Index using Jedis?
I am trying to delete a index using Jedis. I have the following... public void deleteAll() { // Optionally drop and recreate the index try (Connection connection = jedis.getPool().getResource()) { if (connection.isConnected()) { connection.sendCommand(SearchProtocol.SearchCommand.DROPINDEX, "DROPINDEX", "spring-ai-example", "DD"); // Use your…
Comparison between MULTI command in Valkey vs Redis
I am new to valkey/redis and I have a question about the usage of MULTI command for transactions. Lets say we have a client with a single connection to valkey, and the client handles concurrent requests over this single connection,…
Docker – cannot get to redis from aspire.net9
I’m using Parallels on my Mac to run a Windows 11 VM. Docker Desktop is running on the Mac. I’ve created an Aspire.NET 9 app that uses Redis. The app is developed using VS Code on the Mac and Visual…
jemalloc MALLOC_CONF values not reflecting when I run MEMORY MALLOC-STATS in Redis
I am trying to set some tunables for jemalloc at runtime, before launching Redis. http://jemalloc.net/jemalloc.3.html#tuning : Says that I can set the environment variable MALLOC_CONF. This is how I am doing that. I run export MALLOC_CONF=narenas:40 in my shell, then…
Redis – Fix SpelEvaluationException: EL1007E in Cachable changes
When I call the @CachePut function, I get the error: org.springframework.expression.spel.SpelEvaluationException: EL1007E: Property or field 'universalId' cannot be found on null. universalId is one of the fields of CreateAccountRequest but it could not find and could not generate key in…
Redis – Celery concurrency vs number of worker
What is the difference between celery -A tasks worker -l info --concurrency=4 And celery -A tasks worker -l info -n worker1@%h celery -A tasks worker -l info -n worker2@%h celery -A tasks worker -l info -n worker3@%h celery -A tasks…