Language's own native data-structures are generally much more capable and vast. 99%+ developers use only a very limited set of those capabilities. This approach packages those most used ones into a nice, consistent DSL.

It's similar in effect to what busybox does to shell utilities, though the motives are different.

Redis has some pretty useful primitive that many languages don't:

- HyperLogLog, bloom filter, other probabilistic data structures

- Geospatial operations on stored points and polygons

- Expiring keys, for creating caches

These aren't in most standard libraries, and the Redis implementations tend to be fast, robust and well understood.

I use PHP. None of the language tools or constructs available to me are adequate.

https://blog.codinghorror.com/the-php-singularity/