22nd weekly post, remaining ratio. Also, Log4Shell.

Items of the week

• CSS — aspect-ratio can be used to set a preferred width-to-height ratio of a box, it accepts values of <ratio> data type, e.g. 16/9. More about this CSS property is explained on MDN Web Docs.
• AWS Lambda — the context object passed to a handler function includes a method getRemainingTimeInMillis()which returns the approximate remaining execution time before timeout. Picked that up from chapter 6 of Serverless Architectures on AWS.
• On the week 49 of 2021, we saw a remote code execution vulnerability on the popular Java logging library — Apache Log4j. Now also known as Log4Shell, the exploit allows arbitrary Java code to be executed, more details about this on LunaSec blog.

This is a weekly bite-sized post on web app development from JavaScript to UX and technology in general. Thank you for reading and have a nice day!