Web Locks API - HTTP203 Advent

Key Takeaways

[Music] it's December Christmas time I thought we talked about some of the features that are coming in 2018 and I'll try and describe it to you in two minutes but you can ask the questions okay I want to talk about the web blocks API go it's that like warlocks know so it's like lot like mutex locks and stuff yes what correct what is it what how right okay so the idea is in a page or in worker you would say I want a lock named the and you can give it a name any name you want it's just a string okay right and then it will wait until nothing else has a lock of that name open mm-hm and then once it's open you get a callback you usually use an async function here yeah it's expected to return a promise and you like you know return the promise to resolve the promise they return from the async function yeah once you have done the work that you are wanting to look for okay and so that lock is shared across the origin I would presume yes the whole origin yeah okay so I mean we we have locks on or above us right we have oh it's the atomic things right wait and lock yeah right so you can build a lock yes but you cannot wait on the main thread with an atomic true you can only wait in a worker whereas with this this is an asynchronous thing whoo so it can work on a page as well and it also lets you do shared locks right so okay right so it in in a shared mode you can how you can say like I want a lock on this but I'm prepared to share with other shared things okay but then when a non shared thing comes along for the same name it has to wait for all of the shared things to finish for the night so an exclusive I got read/write mutex way lots of people can read but only one person can write like read and write stuff and it means like you can kind of do some of this similar stuff with like local storage or with yeah but it you run into problems have a tab crashes or if it closes before it can are the clock whereas this will all happen because it's okay yeah you convinced is that signed off can we have it now I I'll think about it okay fair enough we have three seconds to go [Music] architecture that's buildings it's not as if the web may you got confused well the thing is that lots of other fields like enterprise engineering and gaming have like these architectural patterns when they build like really complex things no fields don't have architecture you're thinking your cities