My name is Kia Rahmani and I am a 4th year PhD student of computer science at Purdue University. I am a member of the programming languages group, working under the supervison of Professor Suresh Jagannathan. The main topics of my reseach interests include formal methods of modeling, analysis and verification of applications. I specifically focuse on automated generation of verifiably correct and scalable distributed (database-backed) applications.
Sound Static Detection of Bugs in Highly Scalable Distributed Applications for Weakly Consistent Databases:
To be written.
Enforcement of finde-grained consistency guarantees using effect orchestration:
Non-deterministic behaviors arise in weakly consistent data stores which can potentially violate application correctness, forcing designers to either implement (very complex) ad-hoc mechanisms to avoid these anomalies, or choose to run applications using stronger levels of consistency than necessary. In this project, we introduced a lightweight runtime verification system that relieves developers from having to make such tradeoffs. We leveraged declarative axiomatic specifications that reflect the necessary constraints any correct implementation must satisfy to guide a runtime consistency enforcement. Experimental results show that the performance of our automatically derived mechanisms is better than both specialized hand-written protocols and common store-offered consistency guarantees.
Coq Implementation of Quelea:
In this project, I formalized and implemented the operational semantics used in the PLDI’15 paper, Declarative Programming over Eventually Consistent Data Stores in the Coq proof assistant. Even though the mere goal of the project was to familiarize myself with proof assistants and formal language definition, I was able to point out numerous previously unknown problems in the paper foe which I offered fixes as well. The Coq implementation and the fixes were later used as a supplementary material for the original paper (source code).
- Fine-grained Distributed Consistency Guarantees with Effect Orchestration
(with Gowtham Kaki and Suresh Jagannathan)
[Workshop on the Principles and Practice of Consistency for Distributed Data (Portugal-April 2018)]
[Tech Report] [Slides]