I’m not a COBOL dev but I work with mainframes(z/OS). Most COBOL applications I’ve seen have been banking and insurance related with few exceptions. Most of them either run as a series of batch jobs or via transaction managers like IMS and CICS. Backends are usually sequential files(we call them datasets),DB2,VSAM(Virtual Storage Access Method) or DL/1(hierarchical DB that’s part of IMS). Quite a few places I’ve seen have run IBM MQ as well.

If changes are made to these systems it’s often due to changes in regulation or driven by changes in the business(new financial products being offered etc.

Off-topic: I’ve seen quite a few mainframe related posts on HN fly by over the years. I’ve been meaning to create an account and participate but I’ve only gotten around to it just now.

Grok might be able to find the cure for cancer but as long as it's associated with Musk, not touching that thing with a 10-foot pole.

(Simon's analysis, of course, is lovely)

Quantitative stock and crypto trading, a mindfulness web extension, some really basic hardware projects I'm going to commercialize, I'm thinking about starting a youtube channel.

Plug your charger to any Homekit-compatible "smart plug," and create a shortcut that turns the the plug on when the battery reaches 45%, and off when it reaches 55%.

This will of course require a Homekit hub.

No files are uploaded everything is stored locally in the browser using IndexedDB and processed with FFmpeg (WebAssembly port) in the browser.

looks cool, love how there's no sign in required.

some feedback so far:

- allow me to drag + drop video clips to add them to the media section

- allow me to trim the beginning of a clip - right now i can only trim the end of a video clip

- allow me to drag the playhead (right now i can only click to move the playhead somewhere)

- make most of the text on the page be select-none - there were many times when i tried to drag something and it selected a bunch of text on the page