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caching in redux made simple

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One of the biggest complaints developers have with redux is the amount of boilerplate and new concepts they have to learn to use it. By using the robodux pattern the amount of redux boilerplate is dramatically reduced. In most cases, wiring up action types, action creators, and reducers can be done in one line of code.


  • Create actions, reducer, and selectors for common data structures
  • Automates the boring parts of redux
  • Dramatically reduces redux boilerplate
  • Works well with saga-query

What's included

  • createTable: Thinking of reducers as database tables, this function builds actions, reducer, and selectors that builds simple and repeatable operations for that table.
  • createAssign: A catch-all data structure that makes it easy to set or reset the reducer.
  • createList: Store an array of items in a slice
  • createLoaderTable: Store as many independent loaders in this reducer which are all accessible by an id.
  • createSlice: Core function that the above slice helpers leverage. Build action types, action creators, and reducer pairs with one simple function.
  • and more!

Core principles

The overriding principle is that effects (like sagas) should be the central processing unit for all business logic in a react/redux application. We should remove as much business logic as possible from reducers and instead centralize them inside of our side-effect handlers.

The other primary principle is to think of redux as a database and reducers as tables. This simplifies the action/reducer logic and makes it possible to build reuseable components which dramatically reducers boilerplate.

Please see style-guide for more details.

Getting started

yarn add robodux


The primary philosophical change between this library and other libraries is to think of your redux store as a database.

Reducers are database tables and operating on those tables should have a consistent API for managing them.

robodux has a few slice helpers that cover ~90% of the logic and data structures needed to build and scale your state.

These are one-line functions that create action types, action creators, and reducers using a simple set of lower-level functions. There's no magic here, it's more of how we think about our state that has made it dramatically simple to automate repetitive tasks in redux.

One of the more useful APIs from this library is createTable. This slice helper creates a reducer and a set of actions that make it easy to treat a slice as a database table.

import { combineReducers, createStore } from 'redux';
import { createTable, createReducerMap, MapEntity } from 'robodux';

// setup reducer state
interface Comment {
  message: string;
  timestamp: number;

interface State {
  comments: MapEntity<Comment>;

// create reducer and actions
const comments = createTable<Comment>({ name: 'comments' });

// converts multiple slices into an object of reducers to be used with combineReducers
// { comments: (state, action) => state }
const reducers = createReducerMap(comments);
const rootReducer = combineReducers(reducers);
const store = createStore(rootReducer);

// dispatch action to add a record to our table
    1: { message: 'you awake?', timestamp: 1577117359 },
// { comments: { 1: { message: 'you awake?', timestamp: 1577117359 } } }

    1: { message: 'Are you awake?' },
// { comments: { 1: { message: 'Are you awake?', timestamp: 1577117359 } } }

const selectors = comments.getSelectors((state) => state[]);

const state = store.getState();
const commentMap = selectors.selectTable(state);
const commentList = selectors.selectTableAsList(state);
const commentOne = selectors.selectById(state, { id: '1' });
const foundComments = selectors.selectByIds(state, { ids: ['1', '3'] });



Last updated on 15 Sep 2023

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