{"id":339293,"date":"2016-12-20T10:19:37","date_gmt":"2016-12-20T18:19:37","guid":{"rendered":"https:\/\/www.microsoft.com\/en-us\/research\/?post_type=msr-research-item&p=339293"},"modified":"2018-10-16T21:10:17","modified_gmt":"2018-10-17T04:10:17","slug":"lazy-caching-proof-tla","status":"publish","type":"msr-research-item","link":"https:\/\/www.microsoft.com\/en-us\/research\/publication\/lazy-caching-proof-tla\/","title":{"rendered":"A Lazy Caching Proof in TLA"},"content":{"rendered":"

At some gathering (I believe it was the workshop where I presented [103]<\/a>), Rob Gerth told me that he was compiling a collection of proofs of the lazy caching algorithm of Afek, Brown, and Merritt. I decided that this was a good opportunity to demonstrate the virtues of TLA, so there should be a TLA solution. In particular, I wanted to show that the proof is a straightforward engineering task, not requiring any new theory. I wanted to write a completely formal, highly detailed structured proof, but I didn’t want to do all that dull work myself. So, I enlisted Ladkin, Olivier (who was then a graduate student of Paul Vitanyi in Amsterdam), and Roegel (who was then a graduate student of Dominique Mery in Nancy), and divided the task among them. However, writing a specification and proof is a process of continual refinement until everything fits together right. Getting this done in a long-distance collaboration is not easy, and we got tired of the whole business before a complete proof was written. However, we had done enough to write this paper, which contains specifications and a high-level overview of the proof.<\/p>\n","protected":false},"excerpt":{"rendered":"

At some gathering (I believe it was the workshop where I presented [103]), Rob Gerth told me that he was compiling a collection of proofs of the lazy caching algorithm of Afek, Brown, and Merritt. I decided that this was a good opportunity to demonstrate the virtues of TLA, so there should be a TLA […]<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"msr-url-field":"","msr-podcast-episode":"","msrModifiedDate":"","msrModifiedDateEnabled":false,"ep_exclude_from_search":false,"_classifai_error":"","msr-author-ordering":null,"msr_publishername":"","msr_publisher_other":"","msr_booktitle":"","msr_chapter":"","msr_edition":"","msr_editors":"","msr_how_published":"","msr_isbn":"","msr_issue":"3","msr_journal":"Distributed Computing 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