Adding durability to in-memory data structures

Question

What are some of the popular techniques you can adopt to add durability to your in-memory data structures (ie) if the process crashes, you can preserve all previously ex

Answer 1

I've implemented the "Mrjb" technology in 2 companies' products, which is basically exactly what you've suggested in your question: a "Memory Resident Journal Backed" database, an in-memory data-structure where every change is logged to disk as it happens. And it works great for us!

http://www.edval.biz/memory-resident-programming-object-databases

I'd be happy to share our real-world experiences with using this in a production context. I love being able to replay an exact sequence of events or roll back to any point in time.