Lua in Redis: RateLimiter Example
·Use Lua in Redis, how and why, with an example of token bucket rate limiter.
raise NotImplmentedError
How to run Lua script in Redis?
Cache Script
We can use SCRIPT LOAD "xxx" to store the script in redis. Redis use SHA1 to generate the hash of the content. As long as the content doesn’t change, the hash key of the script won’t change. We can use this to check and load scripts without worrying that we may generate multiple script cache every time we load it for the hash key is the same.