tywalch

Key/Index Mutation Scenario Matrix

Every permutation and its outcome at the key and index level. I have removed the following invalid scenarios:

• There are no "update" operations on the main table index (it's immutable)
• Only secondary indexes can have a "condition" function
• The condition function will never be called when the "PK Composites Provided" and "SK Composites Provided" are both none

Create (put, create, upsert)

| Row | Impacted Index Type | PK Composites Provided | SK Composites Provided | Condition Present | Condition Returns | Throws | PK Action | SK Action | Index Outcome |

tywalch

import { Entity, ElectroError } from 'electrodb';
import { DynamoDBClient } from "@aws-sdk/client-dynamodb";

const table = 'electro';

const client = new DynamoDBClient({
  region: "us-east-1",
  endpoint: 'http://localhost:8000',
  credentials: {
      accessKeyId: 'fake',

tywalch

import { Entity, Service } from 'electrodb';
import { DynamoDBClient } from '@aws-sdk/client-dynamodb';

const client = new DynamoDBClient({
    region: "us-east-1",
    endpoint: 'http://localhost:8000',
});

const table = 'electro';

tywalch

process.env.AWS_NODEJS_CONNECTION_REUSE_ENABLED = "1";
import { Entity, ElectroEventListener, Service, createWriteTransaction, createGetTransaction } from 'electrodb';
import { DocumentClient } from "aws-sdk/clients/dynamodb";

const table = "electro";

const configuration = {
    endpoint: "http://localhost:8000",
    region: "us-east-1",
};

tywalch

{
  "name": "electro-test-2023-04-08",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "ts-node src/index.ts"
  },
  "keywords": [],

tywalch

import { DynamoDBClient as V3, ListTablesCommand, DeleteTableCommand, CreateTableCommand } from '@aws-sdk/client-dynamodb';
import { Entity, QueryResponse, EntityItem } from 'electrodb';
import { v4 as uuid } from 'uuid';

const client = new V3({
  endpoint: 'http://localhost:8000',
  region: 'us-east-1',
});

const table = "pagination_test";

tywalch

import { Kinesis } from 'aws-sdk';
import { Command } from 'commander';
import { decodeMessage } from '@jupiterone/platform-sdk-message-codec';

const kinesis = new Kinesis({
  apiVersion: '2013-12-02',
  region: 'us-east-1'
});

const noop = () => {};

tywalch

import { z } from 'zod';
import { Entity, CustomAttributeType } from 'electrodb';
import { v4 as uuid } from 'uuid';
import { DocumentClient } from "aws-sdk/clients/dynamodb";

const client = new DocumentClient();
const table = 'my_table';

const zUserDetail = z.object({
  firstName: z.string().min(1).max(18),

tywalch

const DynamoDB = require("aws-sdk/clients/dynamodb");
const client = new DynamoDB.DocumentClient({
    region: "us-east-1",
    endpoint: "http://localhost:8000"
});

/**
 * withNumbers demonstrates the update of a "composite" gsi sortkey without knowledge of the current
 * composite value at the time of update. This works runs without error and operates as expected.
 */

tywalch

/** 
 * The aim of this exercise is ultimately to inspire communication and be starting place to drive discussion
 * on methodology, general approach, and universal best practices. To frame how best to think about this code is 
 * that it represents a happy path POC, and your task is to use your personal experience to identify and discuss
 * improvements, recommendations and potental changes that you'd recommend to get this service production ready.
 * 
 * Please examine this document, familize yourself, come up with any questions you have and ultimately lets meet 
 * and discuss your thoughts. You don't need to write any code in the meantime. 
 * 
 * Note: