morning

måning

Morning!

Morning

https://twitter.com/FullstackDevJS/status/1130063439106379776/photo/1

Groan…..

Thank you, I needed this today 😄

(hi guys)

morning

I like how pretty much every baddy in Scooby doo was some kind of capitalist rent seeker

And usually in receipt of a funfair.

it’s a good way of teaching kids that the villain is likely to be the local petty gentry

Morning!

Anyone here got experience with clojure and aws lambda (in production?)

Yeah a little

they were p slow

@ben-long has

kk, I thought that might be the case

I did mine of s3 events

somethings added to s3, it triggers a put event, goes to sqs which triggers a lambda. I found it to be ok-ish, you had to implement some java method to have it running, i think it was a handler or something. Also you had to be careful about the deps for the project as well, as theres a soft 20mb limit iirc for the jar. It basically made me feel like you should write the lambda in python or something else.

However once it was set up etc, it was fine 🤷

anyways just ping if u have any questions :thumbsup:

Thank you. The team has started to look to use lambda heavily, and they're taking about doing it in python

I just thought perhaps to present an alternative

But, since I'm the only "lisp-er" here, then I don't think they would be interested in my ramblings about clojure 😉

I would still recommend trying it once though

for example if you are just doign some data transformations etc, its worth just giving it a go, for your own personal knowledge

its not trivial but its not exactly hard

- have some sort of transformation function - create lambda handler - have some validation - test on aws The hard part is really testing locally and all the config set up, theres localstack i think? which is like aws but emulated locally

kk

thank you for the helpful insight! 🙂

@dharrigan for lambda, use cljs

quicker runs

butttt

you get that sellotaped together vibe that a lot of cljs has, especially server side

and I hope you like promises and node interop

honestly I’d be hard pressed making the argument against doing it in python

for the largest serverless project I did, it was functional python in a very lispy style

Yes, that's the thoughts. Right tool for the job. I think the team will use Python 😉

nothing wrong in that 🙂

most AWS APIs return lists, so the pattern of functions that operate over a single item comp’d together into list functions makes sense

https://the-frey.github.io/2018/10/01/very-functional-python-and-aws-lambda

ta

^ you can get v functional with it and then the unit testing is ace, you can test yr individual functions as well as all the compositions

then the only thing you need to integration test is the lamda handler itself

which is kind of like an i/o form, or a main function

that just sequentially executes yr fns

(aside - probably you can tell from this how much I miss the threading macro when I write python lol)

I've done java clojure on lambda, that was slow. But I'd strongly consider graalvm if I was doing it today.

^ this is also a fair point

you could look into lambda layers if you’re on AWS

I’ve not looked at graalvm before, but heard it was fast yeah

(tbf there’s also a lambda layer for haskell)

How does that work for lambda? can u just specify to use graalvm instead of jvm? :thinking_face:

and haskell’s monadic i/o actually makes a lot of sense when composing together AWS lambdas, but I digress…

https://github.com/envoylabs/cljs-serverless-workshop <-- here’s the code for the workshop I ran last night if you want something to poke

aaand here’s the instructor notes. Shouldn’t take more than a few mins to have something deployed if you have AWS creds configured https://gist.github.com/the-frey/767a9c403e691df9915e3ecf04f05594

but like I say you might have a tough time arguing against python 🙂

@dharrigan you triggered the self plug ;) maybe helpful https://labs.uswitch.com/how-we-use-aws-lambda/

https://github.com/FieryCod/holy-lambda this looked pretty cool (haven't used) builds on the above ^

had good experience with cljs lambdas

that’s a nice project by the look of it

portkey is quite cool as well, if you haven’t seen it

portkey is awesome

a repl in a lambda

yeah it’s wild

here is a video from last years Dutch Clojure Days from someone who used Lambda and clojure https://www.youtube.com/watch?v=kXb1DHw632s

is it possible to use REBL with a cljs repl?

anyone done this??

no idea, but maybe ask in #rebl ?