What are people's thoughts about ktor? https://ktor.io/ What are the standard libraries people use for backend dev using Kotlin, it just Spring Boot? If there some good Kotlin backend open source libs that people can point me to, that would be much appreciated! Happy programming!

Hello, I am having issues setting up auto-reload for my Ktor

My build.gradle file

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
    implementation "io.ktor:ktor-server-netty:$ktor_version"
    implementation "ch.qos.logback:logback-classic:$logback_version"
    testImplementation "io.ktor:ktor-server-tests:$ktor_version"
}

Hi guys, I have a following

DTO

data class CompanyCreateDto(
    val name: String,
    val address: String
)

The dto is send by front end for me. Problem is when the name is null kotlin throws an exception that can not be handled. Is it any library or any approach, that provide an ability to give a custom exception with text like

name can not be null

for example

Hi everyone. I am in desperate need of your help. Who @here has references for (belgian) projects done in Kotlin and wants to share these references? I’m trying to build a stronger case to start using Kotlin as a strategy for the company I’m working for. Looking ideally at Kotlin projects as replacement for (typical) Java backend projects.

Backends indeed. That’s why I posted it here. What’s SRE and DS?

https://stackshare.io/kotlin ?

Hi Team, Is there any default distributed lock implementation in ktor ?

I have quite a bit of domain controllers (e.g. NetworkController) and one CsvExportController, is that a good idea? in other words, would you place exportNetworkCsv in this export controller or in the network one?

Hi guys! i am android developer for 2 years. Should i learn ios. is it good be developer on both platform ios and android?

For those who answered yes - 1) how many servers are you using? 2) What framework? [spring/jboss etc] 3) How is the CPU/Memory looking on the servers? 4) Is the DB scaling well alongside the app?

Anybody using Spring R2bc with Kotlin. I am just wondering how to use DB transaction using coroutine.

hello world. So I have this debug session going on and my 'it' is a Context2, but it.get(SecurityContext::class) is getting evaluated to null. what am i missing?

Hello everyone. I am developing an online quiz application. Do you think Firebase is suitable for real-time multiplayer? The game I want to do will be like a quiz up application. Is there a platform you recommend if Firebase is not suitable? i didnt find any example. I'm a little nervous about latency. I couldn't decide between websocket or firebase. what is your suggestion?

Reading from a file with

File.readLines

is discouraged for big files. I suppose is just because it builds a

List

so of course a

Sequence

is preferred. But, does this advice apply also to:

val stream: Flow<String> = File(arguments.filename).readLines().asFlow()

? Not sure if the composer maybe optimise this to not have the full list before flowing,...

Hi, I am writing a Spring Boot Kotlin micro service. I intend to use spring reactive stack along with Kotlin Flows/Coroutines. I want to log all incoming http request and response body in my micro service. What would be an appropriate approach to do that? Is writing a Filter which intercepts the request/response and reads the stream and then log it is safe and recommended? What other options I can explore? Thanks in advance

Does any one here have any experience working with

Micronaut

? I need a bit of help writing tests for Controllers. Examples: How do you write a test to ensure a redirect happens? How do you mock header information?

If I have a ktor client call which receives a List of objects in JSON, how do I pass in a serializer so that List<Foo> can be deserialized?

This message was deleted.

Hello again, does anyone have some experience with KTor and building custom servers? I'm trying to create a grpc microservice, but have trouble with adding a module.

who is using ktor in india , or even kotlin , afraid to invest my career on it.

Does anyone have some hints on how to configure a server(JETTY) to require SSL in http4k?🆘

Is Ktor going to support HTTP/3 & QUIC?

Hey guys, I have a question regarding REST APIs and Kotlin. Normally, we define mutability of properties through `val`and

var

. But when a model is stored in a database and edited in a frontend, we (de-)serialize the model, which removes the usefulness of

val

, because objects are newly created when deserialized (e.g. from a JSON request body). In my

PUT

endpoints, I want to make sure only the fields are updated which are actually mutable, so right now I manually get the old version of the model from the database and update mutable fields one by one manually from the new instance. For me, this has 2 problems: If I only update the var fields, the client might wonder why the other fields did not update on the next request. Secondly, when the model changes, it is easy to forget updating the manual updating code. Anybody got a better approach to this? Do you prever PUT endpoints per mutable property instead?

The OpenTelemetry project is trying to standardize on a context propagation mechanism - and I've found https://github.com/Kotlin/kotlinx.coroutines/issues/284 and would like to know more about it

Hello All, This is a question not entirely related to Kotlin. I am implementing a support center in my web app where users can create an track tickets/incidents/cases. I am experimenting with Zendesk Support API. So far it is doing the job just fine but I wanted to ask here if you guys have used it or can recommend other solutions with which you’ve had a positive experience :)

Can anyone tell me what does server side programming mean? And where can I start with Kotlin?

Hi guys. I lead a popular open source Java library that's often used from Kotlin (see OptaPlanner.org). Those users are asking for nullability annotations on our public API, which we are happy to provide. However, which dependency do I add to maven/gradle to get those? I don't want java users of optaplanner that do "mvn dependency:tree" to see that optaplanner drags in android, jetbrains or findbugs jars.

Hey guys I'm using javax bean validations in dropwizard and I'm getting badly formatted error messages. Anyone bumped into this or have a clue what (and if) I'm doing something wrong?

{
  "errors": [
    "updateAddress.arg1.county must not be empty"
  ]
}

I'm looking for a #serverless solution using kotlin on aws. There is #kotless, which looks good but is very young, and Osiris, which is very quiet on github. Any others?