Generic data structures in memory, grab bag of structures and algorithms... sounds more like a programming language or library than an external tool. C++ STL for example would fit these descriptions perfectly.
Doing everything is a recipe for bloat. In a database, in a distributed cache, in a programming language, in anything.
I think it wouldn't be unfair to compare it to Golang, which has in my opinion a quite unbloated stdlib which allows you do almost anything without external libraries!
Doing everything is a recipe for bloat. In a database, in a distributed cache, in a programming language, in anything.