Service Workersを使ったウェブアプリのアーキテクチャ / Web App Architecture on Service Workers

by laiso

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Service WorkersΛ࢖ͬͨ΢Σ ϒΞϓϦͷΞʔΩςΫνϟ

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Beyond SPAs • https://developers.google.com/web/updates/2018/05/ beyond-spa

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Stack Overﬂow PWA • StackOverﬂowϏϡϫʔ

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Architecture in Stack Overﬂow PWA • Firebase Function • Express/NodeJS • Service Workers

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Architecture in Stack Overﬂow PWA • 2֊ݐΞʔΩςΫνϟ(ςϯϓϨʔτΛڞ௨Խ) • Server-side Rendering(Express) • Web App in Service Workers

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Web App in Service Workers • Workbox • fetch • Non-SPA

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Workbox by @GoogleChrome • ΦϑϥΠϯ΢ΣϒΞϓϦͷͨΊͷϥΠϒϥϦ • Google's Web Developer Relations team

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URLϧʔςΟϯάΛSWͰߦ͏

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ϨεϙϯεϖʔδͷHTMLΛSW Ͱ૊ΈཱͯΔ

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ඞཁͳ৘ใΛfetch͢Δ

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ैདྷͷ΢ΣϒΞϓϦͱͷൺֱ • Ԡ౴଎౓

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SPAͱͷൺֱ • Ωϟογϡཁૉͷ੍ޚ

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SSR: Express • GET /questions/:id • axiosͰAPI call (lru-cacheʹset) • HTMLΛ૊Έཱͯͯ res.write()

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SW: Workbox • GET /questions/:id (workbox-routing) • fetch() ͰAPI call • HTMLΛ૊Έཱͯ (workbox-streams)

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Web App in Service Workers • ϓϩάϨογϒʹ։ൃ͕Մೳ • NodeJSͰ΢ΣϒΞϓϦΛ࡞Δ • SW+WorkboxͰಈ͘Α͏ʹڞ௨Խ͢Δ

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·ͱΊ: Service WorkersΛ࢖ͬ ͨ΢ΣϒΞϓϦͷΞʔΩςΫνϟ • ΢Σϒ͔Β഑৴͞ΕΠϯετʔϧ͞ΕΔ • Ωϟογϡ࢖ͬͯHTMLͰUIΛ૊ΈཱͯΔ • ίϯςϯπ͸ࠩ෼ΛඇಉظʹfetchͰऔಘ͢Δ