Mikhail Sokolov developed a configurable write-response ordering feature for the apache/pekko repository, focusing on enhancing performance tuning in distributed actor systems. He introduced the write-response-global-order option within AsyncWriteJournal, allowing users to disable the resequencer and choose between strict request ordering or completion-based response delivery. This approach enables teams to balance response latency against ordering guarantees, addressing real-world persistence and configuration management needs. Mikhail implemented the feature using Scala and Java, and validated its correctness by creating a dedicated test suite, AsyncWriteJournalResponseOrderSpec. His work demonstrated a deep understanding of persistence mechanisms and robust testing practices within complex actor-based systems.