dataloader VS jest

Compare dataloader vs jest and see what are their differences.


DataLoader is a generic utility to be used as part of your application's data fetching layer to provide a consistent API over various backends and reduce requests to those backends via batching and caching. (by graphql)
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dataloader jest
19 148
10,997 37,236
0.6% 0.9%
2.9 9.6
12 days ago 4 days ago
JavaScript TypeScript
MIT License MIT License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of dataloader. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2021-09-17.
  • Clojure-server to Clojure-server communication library
    6 projects | | 17 Sep 2021
  • To GraphQL or not to GraphQL? Pros and Cons
    5 projects | | 13 Sep 2021
    This is also related to the N+1 problem, where nested queries make the number of database requests explode. If you want to learn more about this problem, I recommend this video and checking out dataloader, a library released by Facebook to help with batching queries and solving this problem.
  • Graph QL query involving more content
    2 projects | | 8 Sep 2021
    i think DataLoader is what you want
  • GraphQL - Diving Deep
    47 projects | | 29 Jul 2021
    While GraphQL is really promising and helpful, you have to understand that like any technology or framework, it does come with its own set of problems, most of which have already been addressed. For instance you might have heard about the N+1 problem, lack of caching, Query cost and complexity and so on and these have been addressed by some projects like the Dataloader, Persisted Queries, Caching and more which you can setup depending on your needs.
  • GraphQL - Usecase and Architecture
    8 projects | | 29 Jul 2021
    You might also want to look at how you minimize the amount of calls you make to the main database. Do you need caching and have it setup? Have you addressed the N+1 problem with Dataloader?
  • The Workflow
    10 projects | | 29 Jul 2021
    This is where you setup things like batching and also solve N+1 problems with something like a dataloader, setup caching with something like Redis or even an LRU cache to act as a proxy for the frequently accessed data whenever and wherever possible, optimizing the network chatter by using something like persisted queries, optimize your resolvers by retrieving as much data as possible from the parent resolvers, setting up pagination to limit the results returned, setting up things like query complexity to control the level of nesting and computation performed, rate-limiting in the gateway to avoid things like DDOS and so on.
  • Do resolvers cause a lot of extra database transactions?
    2 projects | | 30 Jun 2021
    What you are looking for is dataloader.
  • GraphQL Dataloader
    1 project | | 17 Jun 2021
    For more information about Caching, please visit the GraphQL DataLoader GitHub page.
  • I built an open-source Reddit/Discord hybrid using React, TailwindCSS, and GraphQL!
    3 projects | | 8 Jun 2021
    Make sure you don't have any N+1 issues. If you are using FieldResolvers to make database requests, use dataloader (
  • Advanced Promises in Javascript (Dataloader Pattern) - Mike Alche
    2 projects | | 28 Mar 2021
    This looks like the same approach to what the graphql DataLoader does!


Posts with mentions or reviews of jest. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2021-12-02.
  • 10 Must-Have React Developer Tools to Write Clean CodeπŸ’»πŸ”₯
    6 projects | | 2 Dec 2021
    6. React Testing Library With Jest
  • React 101: The Basics
    12 projects | | 30 Nov 2021
    Along with React, Facebook developed a tool for testing JavaScript called Jest. When used by itself, Jest is primary good for testing logic. It doesn't handle any sort of DOM rendering or snapshot testing, so another library is needed for that. The two most commonly used tools for DOM testing are Enzyme and React Testing Library. They both do pretty much the same thing, so it's really just a matter of preference. For end-to-end testing, the most commonly used library is Cypress.
  • Generating code coverage report in Jest
    3 projects | | 28 Nov 2021
    module.exports = { // The bail config option can be used here to have Jest stop running tests after // the first failure. bail: false, // Indicates whether each individual test should be reported during the run. verbose: false, // Indicates whether the coverage information should be collected while executing the test collectCoverage: false, // The directory where Jest should output its coverage files. coverageDirectory: './coverage/', // If the test path matches any of the patterns, it will be skipped. testPathIgnorePatterns: ['/node_modules/'], // If the file path matches any of the patterns, coverage information will be skipped. coveragePathIgnorePatterns: ['/node_modules/'], // The pattern Jest uses to detect test files. testRegex: '(/__tests__/.*|(\\.|/)(test|spec))\\.jsx?$', // This option sets the URL for the jsdom environment. // It is reflected in properties such as location.href. // @see: testURL: 'http://localhost/', // @see: coverageThreshold: { global: { statements: 100, branches: 95, functions: 100, lines: 100, }, }, };
  • The Ultimate Guide to TypeScript Monorepos
    17 projects | | 26 Nov 2021
    Jest is a great tool for running Unit tests within a JavaScript or TypeScript project. Unfortunately, running tests in Jest is often more difficult than one wishes it to be due to the somewhat fragmented nature of the JavaScript ecosystem. For instance, when using TypeScript and/or React, we need to ensure that source files are transpiled into JavaScript before running tests. When using Yarn workspaces, we also need to ensure that Jest is able to resolve local dependencies.
  • Making the Most of DSA Practice
    2 projects | | 26 Nov 2021
    Note: I used Jest as my testing framework, though there are many options out there and the process should be similar regardless.
  • Problems with using `useFakeTimers('modern')` in a create-react-app (CRA) project with Jest 26 and Lodash's `debounce` function
    3 projects | | 22 Nov 2021
    I spent quite a lot of time reading through the ideas on this long-running issue: calling runAllTimers after using Lodash's _.debounce results in an infinite recursion error. That gave me the tip to switch from jest.runAllTimers() to jest.runOnlyPendingTimers(), but I was still getting the TypeError: Cannot read properties of undefined (reading 'useFakeTimers') error message.
  • First look at GitHub Actions
    6 projects | | 21 Nov 2021
    I setup a new action to run Jest tests on "ubuntu-latest" using both Node 14 and Node 16 every time a new Pull Request is created or a new commit is added. I tested it with a new PR and this is what showed up at the bottom:
  • How I Set Up GitHub Actions for a Python Project
    4 projects | | 20 Nov 2021
    Luke used Jest as his testing framework. In my opinion, it wasn't really different from Pytest, so I had no problem with adding a new test case.
  • How to mock nanoid
    3 projects | | 16 Nov 2021
    This short blog post describes how to use Jest to mock nanoid. The nanoid function generates a unique string id. I used it to generate an id for an object. However, I wanted a stable id when unit testing the code. To accomplish this, I mocked the nanoid module and function by doing the following:
  • Creating Tests for Octo
    2 projects | | 16 Nov 2021
    The framework I picked for my project was Jest. I picked Jest because it is the framework I am most comfortable with and it is very easy to setup in your project!

What are some alternatives?

When comparing dataloader and jest you can also consider the following projects:

tap - Test Anything Protocol tools for node

Cucumber.js - Cucumber for JavaScript

ava - Node.js test runner that lets you develop with confidence πŸš€

Sinon.JS - Test spies, stubs and mocks for JavaScript.

WebdriverIO - Next-gen browser and mobile automation test framework for Node.js

nyc - the Istanbul command line interface

nightwatch - End-to-end testing framework written in Node.js and using the Webdriver API

istanbul - Yet another JS code coverage tool that computes statement, line, function and branch coverage with module loader hooks to transparently add coverage when running tests. Supports all JS coverage use cases including unit tests, server side functional tests and browser tests. Built for scale.

Protractor - E2E test framework for Angular apps

mocha - β˜•οΈ simple, flexible, fun javascript test framework for node.js & the browser

TestCafe - A Node.js tool to automate end-to-end web testing.