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Modernization projects move COBOL code running on mainframes to COBOL code running on the jvm or .net, on x86 machines, using all kinds of libraries emulating s

• derefr 4y ago
  > using all kinds of libraries emulating services provided by the mainframe OS/environment Can you give an example of "services provided by the mainframe OS/environment" that could be practically/scalably emulated on a microcomputer architecture using library shims? Because those honestly sound like the sorts of things one might want to use even for non-legacy purposes :)
  • danielmarkbruce 4y ago
    A database. To be clear though, it's usually a library plus a service. It could be library + sqlite etc though I guess. Look here for example, page 8: https://aws-quickstart.s3.amazonaws.com/quickstart-microfocus-amc-es/doc/micro-focus-enterprise-server-on-the-aws-cloud.pdf https://aws-quickstart.s3.amazonaws.com/quickstart-microfocu... It's pretty amazing, big companies make these migrations on important systems. There are 10's (or 100's maybe) of billions of lines of COBOL still being deployed and companies move them into a cloud (ie aws etc, x86 + cloud services) environment for various purposes.