General Improvement

[xuan-cao-swi]

Description

1. Update transaction_name code doc from DogFood to Order
2. Update the noop api README that list available noop method
3. Use settings.partition that allow one loop to separate enabled and disabled transaction name
4. Use @random_generator.rand instead of rand for thread safety
5. Rescue JSON::ParserError for specific error type
6. Use string interpolation instead of [].join('-')
7. Cache @sleep_interval to avoid calculation each time the bucket consume
8. Combine header.filter and reject into one loop
9. Update enable_disable_config that only given string for first parameters. Since it's internal method so no need to increase the complexity (nil.to_s vs '')
10. Add mutex around update_settings to make sure settings is not in race condition.

Test (if applicable)

[tammy-baylis-swi]

Overall looks good and nice to see some functions factored out. I had several comments, mostly about log levels for scenarios.

[tammy-baylis-swi]

Thanks for updates, lgtm