Evaluate different encoders for eve-log
We were thinking that it could be useful to be able to choose a specific encoders for eve JSON logs.
As of now these logs are encoded as normal JSON strings, however in some use cases it could be better to use a different encoder to write output.
In example msgpack could be a good choice when sending output to redis (or even to file) because it reduces output size. This may also help increasing output performances in high throughput environments.