redux-effects-specter-cache

Caching middleware for @specter/redux-effects-specter.

Installation

npm install --save @specter/specter  \                  # peer dependency
                   @specter/storage \                   # peer dependency
                   @specter/redux-effects-specter \     # peer dependency
                   @specter/redux-effects-specter-cache

Usage

Installing the middleware:

import { createStore, applyMiddleware } from 'redux';
import { Client } from '@specter/specter';
import stepsMiddleware from 'redux-effects-steps';
import specterMiddleware from '@specter/redux-effects-specter';
import specterCacheMiddleware from '@specter/redux-effects-specter-cache';
import rootReducer from './reducers';

const client = new Client({
  base: '/xhr'
});

const cacheConfig = {
  max: 500,
  maxAge: 1000 * 60 * 60
};

const cacheMiddlewareConfig = {
  excludes: [
    "greet" // expected service name of specter
  ]
}

const store = createStore(
  rootReducer,
  applyMiddleware(
    stepsMiddleware,
    specterCacheMiddleware({ cacheConfig, cacheMiddlewareConfig }),
    specterMiddleware(client)
  )
);

redux-effects-specter-cache must be applied before redux-effects-specter.

API

Middleware

specterCacheMiddleware(cacheConfig, [options])

Creates redux middleware.

Arguments

• options (Object) : LRE-cache option and middleware option
  • cacheConfig (Object): See lru-cahce API docs for more info.
  • middlewareOption (Object):
    • excludes (Array): An array of the resource names to not use the cache. Defaults [].
    • fromCache (Function): Checks whether an action is target to obtain from cache. Defaults () => true.
      • Arguments:
        • action (Object): An action.
        • state (Object): The current state of the Store.
      • Returns:
        • (Boolean): If true, uses cache to obtain the resource.
    • toCache (Function): Checks whether an action is target to store to cache. Defaults () => true.
      • Arguments:
        • action (Object): An action.
        • state (Object): The current state of the Store.
      • Returns:
        • (Boolean): If true, saves the obtaining resource to cache.
    • resetCache (Function): reset cache if resetCache function returns true. Defaults () => false.
      • Arguments:
        • action (Object): An action.
        • state (Object): The current state of the Store.
      • Returns:
        • (Boolean): If true, reset all cache.

Returns

• (Function): Redux middleware.