Cracow, Małopolskie, Poland
See my open source projects at https://github.com/valyala . VictoriaMetrics founder and core developer
Building the best observability solutions for metrics and logs
- Successfully led building cost-effective ad serving infrastructure for high load (up to 300K qps per server). - Successfully led backend language transition from PHP+node.js to Go. This significantly reduced development, maintenance and operational costs. - Helped building fast and powerful ad analytics on top of ClickHouse. - Helped improving monitoring and logging infrastructure on top of Prometheus, ClickHouse and Grafana.
* Proposed and implemented new revenue sharing scheme with guaranteed gross profit margin (previous schema sometimes could lead to negative gross profit). * Reduced hosting costs per request by an order of magnitude. * Improved backend software stability from multiple crashes per hour to zero crashes/freezes and zero memory leaks per month. * Significantly optimized stats' processing speed. * Added detailed click stats, so every click could be filtered or grouped by a dozen of attributes on the fly. * Added missing ad serving features (filters, limits, smart requests' throttling). * Added detailed event logging and real-time backend state observability.