Redis

“That's why we had huge backlash when Redis, Elasticsearch, and Terraform went source-available, right?”

“most competent programmers decided that redis was just a smarter memcache and started designing around data loss”

“Redis is still a mainstay of many companies and in ~30% of the cases I review I find one or more installations.”

“Redis has great qualities, I don't use it often but I've also for years now understood why Redis was put in front of these use cases”

“I really just disagreed with the assessment that redis is not good enough for the job for a reservation system”

“The idea of a separate networked process to store and retrieve variables from memory sounds like something a first year engineer would do”

“Low memory, high-performance, feature-rich, and stable. Really hard to beat it for places where you want a durable cache”

“The amount of redis-as-database, or X really, that I see deployed that practically make no sense is insane.”

“Throwing a hosted Redis in front of some hot-path API calls is very straightforward and easier to reason about”

“having hybrid solutions like Redis and their flash memory solution is probably going to be the compromise going forward”

“redis is more a arbitrary shared Python heap kinda thing with all the data structures and single thread”

“Redis is brought into a stack because (most importantly!) it's fast and (almost as importantly!) because it's simple.”

“Redis works great as a cache, but there are a few things you need to do in order to use it reliably as a cache.”

“Redis does not support indexes and all sorts of other things. It works well only for a specific kind of workload”

“it's really (and i mean really) fast, very easy to get up and running and the protocol is pretty simple”

“The entire value of redis IMO is that is ISN'T inside your normal application, but rather some shared storage that all nodes can use to coordinate”

“if Redis was embeddable you'd get a robust C-FFI style implementation of those data structures which has been tested a lot more”

“Redis is a real database. If I wasn't convinced it could retain data I hand it, I wouldn't use it in the first place.”

“It should not land in broken states so easily. It should not limit the number of writers. It should not error during failover.”

“Redis gives you a very well-defined/understood set of rich data structures with built-in behavior like TTL, atomic operations, eviction, and persistence.”

“For simple cases, it is probably a total overkill to even consider it, but for something heavier, embedding the database gives you a chance to trivially migrate later”

“directly use Redis as it was intended (data structures over the network) then it makes sense”

“Redis/Valkey is relatively easy to stand up... I almost don't give it a second thought to stand up Redis”

“They cared more about making money and open source was a useful facade to get people to contribute for free.”

“Redis uses a skiplist for range queries and ordered iteration paired with a hash table for O(1) lookups”

“seeing startups spin up managed postgres + redis clusters + prisma on day 1 just to collect waitlist emails is peak feature vomit”

“It's a 10 lines Python script that will deliver 20k/50k queries per second more or less, out of the box with zero optimizations.”

“we had to switch to redis for another sub-system and IIRC there some positive implication for cache layer as well”

“having Redis able to handle scale independently of postgres has been a life saver, and saved us a lot of money”

“Redis has a bunch of algorithms which are battle-tested and ease implementation of common patterns.”

“The point of Redis is that it is in memory and you can smash it with hot path queries while taking a lot of load off the backing DB.”

“many developers don't mind using Docker to run Redis / Postgresql and other services on Mac that are very simple to install and run directly”

“redis gives you more goodies. You can store temporary state for tasks that require coordination between multiple nodes without race conditions”

“Key-value operations are mostly O(1). You'll never get that kind of performance with other databases because they intentionally don't give you that granularity.”

“Redis is as reliable as the storage you persist it to. If you're running Redis right, it's very reliable.”

“this is why redis was preferred anyways: it was a lightweight database for the task processor to store state, etc.”

“all these hipsters startups (MongoDB, Redis, etc) all ended up enshittifying their open source products”

“The docs explicitly state that clusters do not provide strong consistency and can lose acknowledged data.”

“they go with microservices, Redis, RabbitMQ, etc, making the system more complex and less available”

“Mature C programs written by professional coders (Redis is a good example) basically never crash in the experience of users.”