For most of your questions my answers are "I don't know" or "probably things haven't changed much (but I haven't gone looking very hard)". I'm still under the

For most of your questions my answers are "I don't know" or "probably things haven't changed much (but I haven't gone looking very hard)". I'm still under the impression that valgrind, gdb, libuv, g++/clang, are tools of choice. You didn't mention allocators: maybe try linking with a better malloc: tcmalloc or jemalloc. But I think that was also true 4 years ago. > C++11 features: which ones are production ready? What compiler and which standard C++ library are you using? Generally speaking, any your targeted compilers support. Rvalue references and move semantics are the best and most important C++11 feature. Variadic templates would be the second best, I'd say. Scoped enumerations are nice. And being able to say std:: instead of boost:: in places, with std::bind, std::unique_ptr<T> (not boost::scoped_ptr<T>), std::unique_ptr<T[]>. nullptr_t. Stuff in http://en.cppreference.com/w/cpp/types http://en.cppreference.com/w/cpp/types . Other boring C++11 features like new uses of the "using" keyword. > Threads: still with pthreads? You could use C++11 threading stuff, but I'm not inclined to do so.