meteor-reactive-cache
Utilities for caching reactive data
Installation
$ npm install --save meteor-reactive-cache
Usage
ReactiveCache(compare: function)
A simple reactive cache. It haves the same API like a ReactiveDict
, but the values are getting deleted if all wrapped computations are stopped.
import { Tracker } from 'meteor/tracker'import { ReactiveCache } from 'meteor-reactive-cache' const reactiveCache = new ReactiveCache(/* compareFn */);reactiveCache.set('foo', 'bar');const computation = Tracker.autorun(() => { reactiveCache.get('foo'); // reactive!})reactiveCache.set('foo', 'new bar');computation.stop(); // keys will be invalidated if they don't have reactive dependantsreactiveCache.get('foo'); // undefined
DataCache(resolve: function, { timeout: number, compare: function })
Provides a simple reactive data cache, by passing in a function, that resolves a key to data in a reactive context.
import { Tracker } from 'meteor/tracker'import { DataCache } from 'meteor-reactive-cache' const dataCache = new DataCache((key) => { // do some expensive reactive work here, which returns the same data for the same key. // this function will only be executed if a reactive dependency changes or the requested key isn't cached. })const computation = Tracker.autorun(() => { reactiveCache.get('foo'); // reactive!})computation.stop(); // keys will be invalidated if they don't have reactive dependantsreactiveCache.get('foo'); // undefined
reactiveField(resolve: function, { timeout: number, compare: function })
Like DataCache, but with a much simpler API and support for multiple function parameters.
import { Tracker } from 'meteor/tracker'import { reactiveField } from 'meteor-reactive-cache' const field = reactiveField((val1, val2, val3) => { // …})const computation = Tracker.autorun(() => { field('foo', 'bar', 1234); // reactive!})
License
Licensed under MIT license. Copyright (c) 2017 Max Nowack
Contributions
Contributions are welcome. Please open issues and/or file Pull Requests.
Maintainers
- Max Nowack (maxnowack)