kj800x

preface: Posting these online since it sounds like these notes are somewhat interesting based on a few folks I've shared with. These are semi-rough notes that I basically wrote for myself in case I ever needed to revisit this fix, so keep that in mind.

I recently bought an LG ULTRAGEAR monitor secondhand off of a coworker. I really love it and it's been great so far, but I ran into some minor issues with it in Linux. It works great on both Mac and Windows, but on Linux it displays just a black panel until I use the second monitor to go in and reduce the refresh rate down to 60 Hz.

This has worked decent so far but there's some issues:

• It doesn't work while linux is booting up. The motherboards boot sequence is visible just fine, but as soon as control is handed over to Linux and I'd normally see a splash screen while I'm waiting for my login window, I see nothing.
• It doesn't work on the login screen. This would be fine if login consistently worked on my second screen, but I need to manually switch

tofusoup429

//ver 1.0.7
export const excelDateToJSDate = (date:number):Date => {
    //takes a number and return javascript Date object
  return new Date(Math.round((date - 25569)*86400*1000));
}

export const jsDateToExcelDate = (date:Date):number => {
    //takes javascript a Date object to an excel number
  let returnDateTime = 25569.0 + ((date.getTime()-(date.getTimezoneOffset() * 60 * 1000)) / (1000 * 60 * 60 * 24));
  return Math.floor(returnDateTime)

bcherny

Notes on Martin Kleppmann's excellent Designing Data-Intensive Applications.

Chapter 1: Reliable, Scalable, and Maintainable Applications

• Data Systems
  • Dimensions to consider when thinking about data systems: access patterns, performance characteristics, implementations.
  • Modern data systems often blur the lines between databases, caches, streams, etc.
• Reliability
  • Systems should perform the expected function at a given level of performance, and be tolerant to faults and user mistakes
• Fault: One component of a system deviating from its spec. Prefer tolerating faults over preventing them (except for things like security issues). Faults stem from hardware failures, software failures, and human error (in a study, config errors caused most outages).