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
Automating Web Accessibility Testing with AI Agents
maminami373
0
1.3k
Platform開発が先行する Platform Engineeringの違和感
kintotechdev
4
590
「その開発、認知負荷高すぎませんか?」Platform Engineeringで始める開発者体験カイゼン術
sansantech
PRO
2
910
会社紹介資料 / Sansan Company Profile
sansan33
PRO
7
380k
企業の生成AIガバナンスにおけるエージェントとセキュリティ
lycorptech_jp
PRO
3
200
20250912_RPALT_データを集める→とっ散らかる問題_Obsidian紹介
ratsbane666
0
100
新アイテムをどう使っていくか?みんなであーだこーだ言ってみよう / 20250911-rpi-jam-tokyo
akkiesoft
0
350
組織を巻き込む大規模プラットフォーム移行戦略 〜50+サービスのマルチリージョン・マルチプロダクト化で学んだステークホルダー協働の実践〜 / Platform migration strategy engaging all stakeholders
toshi0607
2
200
「どこから読む?」コードとカルチャーに最速で馴染むための実践ガイド
zozotech
PRO
0
570
複数サービスを支えるマルチテナント型Batch MLプラットフォーム
lycorptech_jp
PRO
1
980
なぜテストマネージャの視点が 必要なのか? 〜 一歩先へ進むために 〜
moritamasami
0
240
使いやすいプラットフォームの作り方 ー LINEヤフーのKubernetes基盤に学ぶ理論と実践
lycorptech_jp
PRO
1
160
Featured
See All Featured
[RailsConf 2023] Rails as a piece of cake
palkan
57
5.8k
Principles of Awesome APIs and How to Build Them.
keavy
126
17k
Visualization
eitanlees
148
16k
Testing 201, or: Great Expectations
jmmastey
45
7.7k
Improving Core Web Vitals using Speculation Rules API
sergeychernyshev
18
1.1k
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
656
61k
How To Stay Up To Date on Web Technology
chriscoyier
790
250k
Facilitating Awesome Meetings
lara
55
6.5k
RailsConf 2023
tenderlove
30
1.2k
The Art of Programming - Codeland 2020
erikaheidi
56
13k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
285
14k
Balancing Empowerment & Direction
lara
3
630
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·ͨ͠