AlexZeitler

AWS Lambda

Whats the maximum number of virtual processor cores available in aws lambda

Memory Settings:

Memory: 3008 MB

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namespace Newtonsoft.Json.Converters

open Microsoft.FSharp.Reflection
open Newtonsoft.Json
open System

type IdiomaticDuConverter() = 
    inherit JsonConverter()
    
    [<Literal>]

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// Single case union
[<Struct>] type MHPI = MHPI of double

// An entity that contains SCU
type Entity = {
    Foo: string
    Bar: MHPI
}

// JSON.NET Converter

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namespace Infrastructure

open System.Text.Encodings.Web
open System.Text.Json
open System.Text.Json.Serialization

[<RequireQualifiedAccess>]
module JsonSerializer =
    let private setupOptions (options: JsonSerializerOptions) =
        options.PropertyNamingPolicy <- JsonNamingPolicy.CamelCase

AlexZeitler

Stubbing Lambda Functions in your CDK Stack

Given you have a stack with one or more Lambda functions (e.g. as part of a Step Functions state machine), it can be pretty useful to stub long running parts with a known response.

This makes use of cdk Aspects, which allows modifying all or a filtered subsset of resources for a given scope (Stack, Construct).

In addition this leverages raw overrides to remove the original code of the Lambda function.

Please note, that the stub has to be in Python or NodeJS, since inlining code is only supported by those runtimes.

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// ========= Event Sourcing in a nutshell

(*
    FriendlyName: string
        Aggregate friendly name.

    Initial: 'State
        Initial (empty) state we will start with.

    Decide: 'Command -> 'State -> 'Event list

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module App

open Elmish

type State = 
    { CurrentUser: string option }

type Msg = 
    | SignIn of string
    | SignOut

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Oh my zsh.

Install with curl

sh -c "$(curl -fsSL https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"

Enabling Plugins (zsh-autosuggestions & zsh-syntax-highlighting)

• Download zsh-autosuggestions by

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swagger: '2.0'
info:
  title: Siren API
  description: Template for a Siren API
  version: '0.1.0'
schemes:
  - http
  - https
basePath: /
produces:

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'use strict';
class Abstract {
  // A static abstract method.
  static foo() {
    if (this === Abstract) {
      // Error Type 2. Abstract methods can not be called directly.
      throw new TypeError("Can not call static abstract method foo.");
    } else if (this.foo === Abstract.foo) {
      // Error Type 3. The child has not implemented this method.
      throw new TypeError("Please implement static abstract method foo.");