So, you’ve migrated your application to Reactive Microservices to get the last ounce of performance from your servers. Still want more? Perhaps you forgot about the logs: logs can be one of the few roadblocks on the road to ultimate performance. At Exoscale, we faced the same challenges as everyone: the application produces logs, and they need to be stored in our log storage – Elasticsearch, with the minimum of fuss and the fastest way possible. In this talk, I’ll show you some insider tips and tricks taken from our experience put you on the track toward fast(er) log management. Without revealing too much, it involves async loggers, JSON, Kafka and Logstash.