foo:
      policy: 'token_bucket'
      limit: 1000
      rate: { interval: '15 minutes', amount: 5 }
      cache_pool: rate_limiter.cache_pool
      lock_factory: 'lock.rate_limiter.factory'

rate_limiter.cache_pool => it's a persistent cache pool like redis

When using previously this configuration and consume the token bucket with 1 token it was save on the storage with 999 tokens available.

If you update the configuration with a lower token limit

foo:
      policy: 'token_bucket'
      limit: 10
      rate: { interval: '15 minutes', amount: 5 }
      cache_pool: rate_limiter.cache_pool
      lock_factory: 'lock.rate_limiter.factory'

You can consume 999 tokens before triggering the bucket limit without flushing the cache. The purpose of this PR is to update and use the new configuration limit.