@willyjschultz

Staff Research Engineer @ MongoDB Research CS PhD in formal methods, distributed systems. Prev: @MSFTResearch, @Apple, @AWS

 Cambridge, MA
will62794.github.io
Joined May 2011
  • Tweets14
  • Following651
  • Followers144
1Media
Recent experiment on ~fully autonomous TLAPS proofs for Raft with Opus 4.6. Preliminary takeaway: can complete non-trivial inductive invariant proofs with close to 100% autonomy (> 40 minute agent runs w/ no human input). will62794.github.io/formal-m…

Towards Autonomous Protocol Proofs

Writing formal proofs for distributed protocols is tedious and usually not worth the effort for real-world systems. In general, you have to come up with an inductive invariant which is already a very...

will62794.github.io
1
7
2
39
5,193
William Schultz retweeted
PVLDB@pvldb6 Sep 2025
Vol:18 No:12 → Design and Modular Verification of Distributed Transactions in MongoDB vldb.org/pvldb/vol18/p5045-s…
7
24
2,111
Consensus protocols are hard, and dynamic reconfiguration (replacing failed machines w/ new ones) is even trickier. I wrote about our use of formal methods in MongoDB to design a novel, "logless" reconfiguration protocol quickly and confidently. mongodb.com/company/blog/tec…

Rapid Prototyping A Safe, Logless Reconfiguration Protocol For MongoDB With TLA+

Learn how MongoDB designed a safe, logless reconfiguration protocol using TLA+ to accelerate development and ensure correctness.

mongodb.com
1
12
432
The protocol is formally specified and verified in TLA+, and, for fun, you can also take it for a spin in this interactive protocol visualization: will62794.github.io/spectacl…

Spectacle - Online TLA+ Playground

An interactive playground for exploring and sharing TLA+ specifications in the browser.

will62794.github.io
1
253
Load more