Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
ServiceWorkerの開発 / ServiceWorker Development
Search
Sho Miyamoto
June 01, 2019
Technology
2
730
ServiceWorkerの開発 / ServiceWorker Development
2019年にお話させていただいたServiceWorkerの開発に関する発表の資料です。部分的に(あるいは全体的に)情報が古くなっている可能性がありますのでご了承ください。
Sho Miyamoto
June 01, 2019
Tweet
Share
More Decks by Sho Miyamoto
See All by Sho Miyamoto
JavaScriptエンジンから見るランタイム / 2024-04-25
shqld
12
2.1k
Proxy-Status & Cache-Status
shqld
0
590
High Performance JavaScript / jsconfjp2019
shqld
0
580
FastlyとTypeScriptで実現するカナリアリリース / yamagoya2020
shqld
20
7.3k
Loading Performanceとの向き合い方 / InsideFrontend 2019
shqld
8
2.3k
日経電子版とPWAのこれから / PWANight vol.2
shqld
2
4.9k
日経電子版のマイクロフロントエンドとPWA / devsum2019
shqld
7
12k
Other Decks in Technology
See All in Technology
250905 大吉祥寺.pm 2025 前夜祭 「プログラミングに出会って20年、『今』が1番楽しい」
msykd
PRO
1
990
要件定義・デザインフェーズでもAIを活用して、コミュニケーションの密度を高める
kazukihayase
0
120
react-callを使ってダイヤログをいろんなとこで再利用しよう!
shinaps
2
260
Autonomous Database - Dedicated 技術詳細 / adb-d_technical_detail_jp
oracle4engineer
PRO
4
10k
Codeful Serverless / 一人運用でもやり抜く力
_kensh
7
450
Webアプリケーションにオブザーバビリティを実装するRust入門ガイド
nwiizo
7
860
開発者を支える Internal Developer Portal のイマとコレカラ / To-day and To-morrow of Internal Developer Portals: Supporting Developers
aoto
PRO
1
470
Evolución del razonamiento matemático de GPT-4.1 a GPT-5 - Data Aventura Summit 2025 & VSCode DevDays
lauchacarro
0
210
人工衛星のファームウェアをRustで書く理由
koba789
15
8.2k
Agile PBL at New Grads Trainings
kawaguti
PRO
1
450
Generative AI Japan 第一回生成AI実践研究会「AI駆動開発の現在地──ブレイクスルーの鍵を握るのはデータ領域」
shisyu_gaku
0
320
職種の壁を溶かして開発サイクルを高速に回す~情報透明性と職種越境から考えるAIフレンドリーな職種間連携~
daitasu
0
170
Featured
See All Featured
A better future with KSS
kneath
239
17k
BBQ
matthewcrist
89
9.8k
Being A Developer After 40
akosma
90
590k
Building Better People: How to give real-time feedback that sticks.
wjessup
368
19k
Mobile First: as difficult as doing things right
swwweet
224
9.9k
Code Review Best Practice
trishagee
71
19k
Automating Front-end Workflow
addyosmani
1370
200k
A designer walks into a library…
pauljervisheath
207
24k
The Art of Programming - Codeland 2020
erikaheidi
56
13k
Into the Great Unknown - MozCon
thekraken
40
2k
Java REST API Framework Comparison - PWX 2021
mraible
33
8.8k
The Illustrated Children's Guide to Kubernetes
chrisshort
48
50k
Transcript
ServiceWorkerͷ ڍಈͱ։ൃ ٶຊ ক (@shqld)
- ٶຊ ক (Sho Miyamoto) - @shqld (Github) - @webseals
(Twitter) - Edge / Server / Client - Իָ - τϥϯϖοτ(JazzFunkܥʣɺϐΞϊ - ౦ೆΞδΞʹॅΈ͍ͨ ͩΕʁ
✘ PWA ✘ جຊతͳ࣮ํ๏ ✔ ServiceWorkerͷڍಈ ͢͜ͱ
ServiceWorker
https://developers.google.com/web/ fundamentals/primers/service-workers/
https://developers.google.com/web/fundamentals/primers/service-workers/
- PWAͷத֩ - ϩʔΧϧͷωοτϫʔΫϓϩΩγ - ϖʔδWindowɺφϏήʔγϣϯͱಠཱ όοΫάϥϯυͰಈ͘ SWͱ
- ΫϥΠΞϯτ͔ΒͷϦΫΤετͷδϟοΫ - ΫϥΠΞϯτͱͷϝοηʔδͷૹड৴ - ΩϟογϡͷอଘɾಡΈग़͠ - ΦϑϥΠϯ࣌ͷॲཧͷԆ SWͱ SW͕
Ͱ͖Δ͜ͱ
WebWorkerͷαϒηοτ ϥΠϑαΠΫϧ͕͋Δ SWͱ ಛ
WebWorker͕Ͱ͖Δ͜ͱશͯͰ͖Δ ServiceWorkerGlobalScope WorkerGlobalScopeΛܧঝ͍ͯ͠Δ - DOM͕ͳ͍ - postMessageͰ௨৴ - ผεϨουͰಈ͘ WebWorker
ͷαϒηοτ
SWʹϥΠϑαΠΫϧ͕ଘࡏ͢Δ ϥΠϑαΠΫϧ
ϥΠϑαΠΫϧ https://bitsofco.de/content/images/2016/07/Lifecycle-3.png
ϥΠϑαΠΫϧ https://bitsofco.de/content/images/2016/07/Lifecycle-3.png ঢ়ଶ ݹ͍worker͕ શͯऴΘΔ·Ͱ͍ͬͯΔ ్தͰࣦഊ / ৽͍͠SWʹஔ͖ΘΔલ SWεΫϦϓτͷ ύʔε͕ऴΘ͚ͬͨͩ
ϦΫΤετΛ δϟοΫͰ͖Δ
SW͕ൃՐ͢ΔΠϕϯτʹ2छྨ͋Δ - Lifecycle Events - oninstall - onactivate - Functional
Events - onfetch - onmessage - …etc. ϥΠϑαΠΫϧ Πϕϯτ
ϥΠϑαΠΫϧ https://bitsofco.de/content/images/2016/07/Lifecycle-3.png ϥΠϑαΠΫϧ Πϕϯτ oninstall onactive
ϥΠϑαΠΫϧ oninstall https://developers.google.com/web/fundamentals/primers/service-workers/lifecycle
- installingޙ - SWͷૢ࡞͕ՄೳʹͳΔ - ੩తϦιʔεͷΩϟογϡ - skipWaiting - ݹ͍workeractive
ϥΠϑαΠΫϧ oninstall
⾠ ݹ͍workerͱίϯϑϦΫτ͢Δૢ࡞ߦΘ ͳ͍ - Ωϟογϡͷআ ϥΠϑαΠΫϧ oninstall
oninstallͷޙɺݹ͍worker͕activeͰͳ͘ͳΔ λΠϛϯάʢ= ݹ͍ϖʔδ͕શͯด͡ΒΕ Δʣ·Ͱɺ৽͘͠Πϯετʔϧ͞ΕͨworkerΛ activate͠ͳ͍ oninstallதʹݺͿͱɺ͜ͷڍಈΛճආͰ͖Δ ϥΠϑαΠΫϧ skipWaiting()
⾠ ಉ͡ϖʔδͰҟͳΔεΫϦϓτ͕ಈ͘͜ ͱʹͳΔ e.g. 1. ϦιʔεA: old worker 2. ϦιʔεB:
new worker ϥΠϑαΠΫϧ skipWaiting()
ϥΠϑαΠΫϧ onactivate https://developers.google.com/web/fundamentals/primers/service-workers/lifecycle
activatingޙ ݹ͍worker͏ଘࡏ͠ͳ͍ͷͰɺoninstallͰ Ͱ͖ͳ͔ͬͨ͜ͱ͕Ͱ͖Δ σʔλϕʔεͷҠߦΩϟογϡͷফڈ ϥΠϑαΠΫϧ onactivate
࣮ࡍʹworker͕activated(= Functional Events͕ ड͚औΕΔ)ʹͳΔͷ࣍ͷφϏήʔγϣϯ͔ Β onactivateதʹݺͿͱɺଈ࠲ʹactivatedঢ়ଶʹ ભҠͰ͖Δ ϥΠϑαΠΫϧ clients.claim()
ಉҰφϏήʔγϣϯͰ్த͔ΒSW͕ϑΣο νΛδϟοΫ͢Δ͜ͱʹͳΔ ⾠ جຊతʹඞཁͳ͍ ⾠ SWͷδϟοΫʹґଘ͢Δͷͦͦྑ ͘ͳ͍ʢSW͕ଘࡏ͠ͳ͍ঢ়گͰରԠͰ͖ͳ͘ ͳΔʣ ϥΠϑαΠΫϧ clients.claim()
ϥΠϑαΠΫϧ https://bitsofco.de/content/images/2016/07/Lifecycle-3.png ϥΠϑαΠΫϧ ·ͱΊ ݹ͍worker͕ શͯऴΘΔ·Ͱ͍ͬͯΔ ్தͰࣦഊ / ৽͍͠SWʹஔ͖ΘΔલ SWεΫϦϓτͷ
ύʔε͕ऴΘ͚ͬͨͩ ϦΫΤετΛ δϟοΫͰ͖Δ `oninstall` `onactive`
ίϯτϩʔϧ = ͋Δworker͕Functional Events ΛϋϯυϧͰ͖Δ ⾠ activeͳworker !== controller ϒϥβʹΠϯετʔϧ͞ΕΔSWෳ͋Δ
- ผυϝΠϯ - ಉҰυϝΠϯ - ผείʔϓ - ಉҰείʔϓ શ͕ͯউखʹಈ͍͍ͯͨΒࠔΔ ίϯτϩʔϧ
ࠓͦͷϖʔδΛίϯτϩʔϧ͍ͯ͠Δworker `navigator.serviceWorker.controller` ίϯτϩʔϧ ίϯτϩʔϥ
ίϯτϩʔϧ ίϯτϩʔϥ ͷܾఆ Worker Worker Worker1 Worker2 their.com/ my.com/ my.com/sub/
my.com/sub/ Page my.com/sub/index.html
ίϯτϩʔϧ ίϯτϩʔϥ ͷܾఆ Worker Worker Worker1 Worker2 their.com/ my.com/ my.com/sub/
my.com/sub/ Page my.com/sub/index.html
ίϯτϩʔϧ ίϯτϩʔϥ ͷΓସΘΓ WorkerB /b/ PageA /a/index.html WorkerA /a/ PageB
/b/index.html φϏήʔγϣϯϦΫΤετؚΊͯ WorkerB͕ίϯτϩʔϧ
ServiceWorkerʹείʔϓ͕͋Δ είʔϓ = SWͷίϯτϩʔϧରൣғ σϑΥϧτSWεΫϦϓτͷύεҎԼ είʔϓ
serviceWorker.registerͷΦϓγϣϯͰࢦఆͰ͖ Δ ͨͩ͠ࢦఆͰ͖Δείʔϓʹ༏ઌͷҧ͏ ෳͷ੍ݶ͕͋Δ είʔϓ είʔϓΛ ࢦఆ͢Δ
είʔϓ είʔϓΛ ࢦఆ͢Δ Script Path navgator.serviceWorker .register({ scope }) e.g.
/sw.js e.g. /, /any/
είʔϓ είʔϓΛ ࢦఆ͢Δ Script Path navgator.serviceWorker .register({ scope }) e.g.
/static/sw.js e.g. /static/, /static/any/
είʔϓ είʔϓΛ ࢦఆ͢Δ Script Path navgator.serviceWorker .register({ scope }) e.g.
/static/sw.js `Service-Worker-Allowed` e.g. / e.g. /, /any/
⾠ δϟοΫͰ͖Δରͱແؔ ⾠ `/sub/` ͱ͍͏ࢦఆͳͷͰɺe.g. `/sub`ͷΑ͏ ͳϦιʔεείʔϓ֎ͱͳΔ είʔϓ
SWࣗମવΩϟογϡ͞ΕΔ Ωϟογϡઓུಛघ τοϓϨϕϧεΫϦϓτͱΠϯϙʔτ͞ΕΔ εΫϦϓτͰڍಈ͕ҟͳΔ SWࣗମͷ Ωϟογϡ
جຊతʹ: ͲΜͳʹͯ͘24࣌ؒޙʹඞͣωοτ ϫʔΫ͔ΒऔΓʹ͍͘ SWࣗମͷΩϟογϡ 24࣌ؒ
navigator.serviceWorker.register()ͷҾΦϓγϣϯ `imports`: - τοϓϨϕϧ: 24࣌ؒ - Πϯϙʔτ: HTTP Ωϟογϡ༏ઌ `all`:
- τοϓϨϕϧ: HTTP Ωϟογϡ༏ઌ - Πϯϙʔτ: HTTP Ωϟογϡ༏ઌ `none`: - τοϓϨϕϧ: 24࣌ؒ - Πϯϙʔτ: 24࣌ؒ SWࣗମͷΩϟογϡ updateViaCache cf. https://developers.google.com/web/updates/2018/06/fresher-sw
αʔϏεϫʔΧʔͷىಈதʹϦΫΤετ͕ ͬͨͱ͖ɺʢΩϟογϡͰࡹ͚ͳ͚Εʣ ϦΫΤετ͕Ԇͯ͠͠·͏ Navigation Preload
NavigationPreload Navigation Preload Page Server
NavigationPreload Navigation Preload Page Server Worker
NavigationPreload Navigation Preload Page Server Worker Worker ~500ms
SWͷىಈͱฒߦͯ͠ϦΫΤετ ϨεϙϯεSWͰऔಘͰ͖Δ NavigationPreload Navigation Preload
NavigationPreload Navigation Preload Page Server Worker Worker ~500ms
NavigationPreload Navigation Preload
NavigationPreload Navigation Preload
Runtime Cache Pre-cache Ωϟογϯά ͷछྨ
Runtime Cache: ফۃతΩϟογϡ Pre-cache: ੵۃతΩϟογϡ Ωϟογϯά ͷछྨ
Ωϟογϯάͷछྨ Runtime Cache Page Server Worker Cache ϑΣον Ωϟογϡ ϦΫΤετ
Ϩεϙϯε
ϥϯλΠϜʢϦΫΤετͷδϟοΫ࣌ʣʹߦ ͏Ωϟογϡ `onfetch`ΠϕϯτͷதͰॲཧ͞ΕΔ ύε֦ுࢠʹΑͬͯΩϟογϡઓུ͕͔ ΕΔ Ωϟογϯάͷछྨ Runtime Cache
Ωϟογϯάͷछྨ Pre-cache Server Worker Cache Ωϟογϡ ϦΫΤετ Ϩεϙϯε
Ωϟογϯάͷछྨ Pre-cache Page Server Worker Cache postMessage Ωϟογϡ ϦΫΤετ Ϩεϙϯε
ϦΫΤετ͔Βಠཱͨ͠Ωϟογϡ ੩తϦιʔεΛ࠷ॳʹΩϟογϡ ಈతʹΩϟογϡ e.g. postMessage… Ωϟογϯάͷछྨ Pre-cache
࣮ࡍͷ։ൃʹ͓͍ͯɺύϑΥʔϚϯε্ʹ ͱͯॏཁ e.g. - ੩తϦιʔε(js, css, …etc.)Λ࠷ॳʹ - ϖʔδͷϦϯΫઌΛػతʹ -
HTTPͷ`Link`ϔομʹࡌ͍ͬͯΔαϒϦ ιʔεҰॹʹ Ωϟογϯάͷछྨ Pre-cache
- Offline mode - Update on reload - Bypass for
network - Preserve log - Switching frames - Hard reload ։ൃ࣌ͷTips
- Wi-FiΛΒͳͯ͘ΦϑϥΠϯΛΤϛϡϨʔτͰ͖Δ - 3GͳͲɺճઢͷ͞ௐઅͰ͖Δ - ApplicationλϒʹεΠον͕͋Δ ։ൃ࣌ͷTips Offline Mode
- Ϧϩʔυ࣌ʹຖճSWͷߋ৽Λڧ੍Ͱ͖Δ - εΫϦϓτΛ͍ͬͨ࣌͡oninstall/onactivateΠϕϯτͷڍಈΛݟͨ ͍࣌ʹ͏ - ʢSWͷߋ৽ʹ͍͔ʹ͕͔͔࣌ؒΔ͔͔Δʣ ։ൃ࣌ͷTips Update on
reload
- શͯͷϦΫΤετ͕SWΛܦ༝͠ͳ͘ͳΔ - SWͷ։ൃ࣌Ҏ֎ɺجຊతʹ͜ΕΛΦϯʹ͢Δ ։ൃ࣌ͷTips Bypass for network
- ϖʔδΛભҠͯ͠ϩά͕Γଓ͚Δ - Ϧϩʔυͯ͠SWΛߋ৽͢Δͱ͖ϩά͕ফ͑ͯ͠·͏ - ͪͳΈʹSWͷϩάʹPrefixΛ͚͓ͯ͘ͱɺSWͷϩά͚ͩΛϑΟ ϧλʔͰ͖Δ ։ൃ࣌ͷTips Preserve log
- ϖʔδʹଐ͢ΔϑϨʔϜΛΓସ͑ΒΕΔ - e.g. SW, WebWorker, iframe, …etc. - ࣮ࡍʹίϯιʔϧͰมΛࢀরͰ͖Δ
։ൃ࣌ͷTips Switching frames
- Hard reload (Cmd+Shift+R) - ͦͷNavigationͰߦΘΕΔશͯͷϦΫΤετ͕SWΛܦ༝͠ͳ͘ͳΔ - ٯʹීஈͷΫηͰHard Reload͢Δਓҙ ։ൃ࣌ͷTips
Hard reload
- Google WebFundamentals - ϥΠϑαΠΫϧ - Workerͷίϯτϩʔϧݖ - είʔϓ -
SWࣗମͷΩϟογϡ - NavigationPreload - Ωϟογϯάͷछྨ - ։ൃ࣌ͷTips ·ͱΊ
͋Γ͕ͱ͏͍͟͝·ͨ͠