Full Text Indexing in the Browser
Only Half As Bad As You Might Think!
...actually a talk about Web Workers
Why do it in the browser?
- Beer Festivals!
- Traveling attendees with poor/no mobile internet
- Webapp with all its data can be accessed offline
- Searching?
Full Text Searching
Web Workers!
- Simple script that runs on another thread
- I/O through XHR/fetch
- Communicates by sending/receiving messages
- Separate global context to window
- Access to things like IndexedDB & WebSockets
Full Text Searching
💥 With Web Worker 💥
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import FullTextSearch from 'full-text-search-light'
let index
function initializeIndex (beerData) {
index = new FullTextSearch()
beerData.forEach(beer => index.add(beer))
postMessage('indexed')
}searchworker.js
import FullTextSearch from 'full-text-search-light'
onmessage = message => {
const payload = message.data
const messageType = payload.messageType
switch (messageType) {
case 'init':
initializeIndex(payload.beerData)
return
default: return
}
}
let index
function initializeIndex (beerData) {
index = new FullTextSearch()
beerData.forEach(beer => index.add(beer))
postMessage('indexed')
}searchworker.js
import FullTextSearch from 'full-text-search-light'
let index
function initializeIndex (beerData) {
index = new FullTextSearch()
beerData.forEach(beer => index.add(beer))
postMessage('indexed')
}app.js
full text indexing in browser
By jonpacker
