Researched fault-tolerant replication protocols like P​axos​ and identified correctness problems when the traditional protocols are used in a multi-service environment.

Proposed an approach which both ensures correctness in the presence of service interactions and also improves throughput by a​n order of magnitude​.

Implemented proposed approach on 4 different replication protocols and run experiments on 6 16-core machines which serve to 5000 clients.

Presented a poster at ​OSDI ‘18​.

Designed privacy-preserving protocols for location-based queries on private data of companies.

Implemented the protocols by using a partially homomorphic cryptosystem for selected queries.

This extension allows c​omputing hot values over terabytes of data in less than a second and are used by companies like A​lgolia,​ a Search as a Service provider with 70+ datacenters.

Implemented c​ms_topn​, an open source P​ostgreSQL​ extension, which uses the Count-min sketch for approximate queries about top items.