Petka Antonov (the author) wrote this: https://github.com/petkaantonov/bluebird/wiki/Optimization-killers https://github.com/petkaantonov/bluebird/wiki/Optimiz

Petka Antonov (the author) wrote this: https://github.com/petkaantonov/bluebird/wiki/Optimization-killers https://github.com/petkaantonov/bluebird/wiki/Optimization-k... Other than that, I think he also said similar rules of C++ and Java optimization apply (avoid allocations a.k.a. creations of new objects, avoid avoidable work in special cases, take advantage of cache locality etc)