Object lifetime and threading

By Jing Yang 杨靖 in Lifetime on

Last time we talked about object lifetime and ownership. Naturally scopes and objects form a tree hierarchy. The root of the tree is the scope where the program starts executing. Beyond the tree structure, we can pass information between scopes with the help of dynamic lifetime. Dynamic lifetime is hard…

Object lifetime and ownership

By Jing Yang 杨靖 in Lifetime on

Before learning Rust, I never thought about object lifetime and ownership that much. It turns out they have many things to do with memory safety and thread safety. Nowadays I think about lifetime and ownership all the time, even when writing programs in C++. Here is a summary of my…

Implementing Raft with Go

By Jing Yang 杨靖 in Raft on

Following my previous post Raft, from an engineering perspective, I gathered some thoughts on related topics. Latency and RPCsLatency matters in a distributed systemLatency is tied directly to availability. The larger the latency, the longer the period the system is unavailable. RPC latency compounds quickly when multiple rounds of RPCs…

Raft, from an engineering perspective

By Jing Yang 杨靖 in Raft on

I recently completed an implementation of the Raft consensus algorithm! It is part of the homework of the online version of MIT course 6.824. It took me 10 months on and off, mostly off. The algorithm itself is simple and understandable, as promised by the paper. I'd like to…