There are some details regarding certain limits (memory, bandwidth, timeout) in the program policy: https://appharbor.com/page/programpolicy https://appharbor.c

There are some details regarding certain limits (memory, bandwidth, timeout) in the program policy: https://appharbor.com/page/programpolicy https://appharbor.com/page/programpolicy Regarding threads: A worker is actually a worker process which can have multiple threads.