feat(redis): add customIncrTtlLuaScript option

[roggervalf]

Allow providing a custom incrTtlLuaScript

[roggervalf]

pls @animir when you get some time

[animir]

@roggervalf Hi. As I see you would like to double TTL of a key whenever consumes more than points? Do you need it to avoid extra requests to Redis? I am asking as I would like to understand your use case.

[roggervalf]

hey @animir, yes but more than double it, it would take how many point in batches are there to calculate the next delay, because when you already have the first batch of points, those are good to have the regular delay but for the second batch they will reach the same rate limit as the first batch came first

[roggervalf]

so the delay for the next points depending on which batch they are included need to have extra delays

[roggervalf]

pls @animir let me know if you have questions about it

[animir]

@roggervalf I do have doubts about bringing this customization to the project.
It would be hard to explain how it works.
And I believe nobody, except you, would use it.

Could you implement it a different way? I suggest to consider settings custom Lua script from outside?
If there would be an ability to set custom Lua script when create RateLimiterRedis you could use you custom code there.
Let me know what you think.

[roggervalf]

sure I can do it

[roggervalf]

it should be ready now, pls when you get some time @animir

[animir]

@roggervalf Published in 5.0.1.