IIRC, Go tries to allocate a contiguous portion of virtual memory. This isn't a problem in 64-bit, because the addressable space is so big, but a 32-bit system

IIRC, Go tries to allocate a contiguous portion of virtual memory. This isn't a problem in 64-bit, because the addressable space is so big, but a 32-bit system that has been running for a while may have enough memory fragmentation that you can't allocate a large enough block. I have to agree about libraries. You don't realize how great it is to have finely-tuned JDBC drivers for every database on Earth until you can't use them.