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௨৴ͷύϑΥʔϚϯεվળ ਿ্༸ฏ ΤϯδχΞ / ΢ΥϯςουϦʔגࣜձࣾ iOSΦʔϧελʔζษڧձ

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݄ؒ40ສਓར༻ اۀ7000ࣾ ϝϯόʔ40ਓ͙Β͍

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J1IPOF J1BE "OEPSJE ̏ףୡ੒ʂ

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WHY? ௨৴ͷύϑΥʔϚϯεվળ

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Wantedly͸ࠓ೥ւ֎ਐग़͠·͢ʂ ڌ఺ͷਓ

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ڌ఺͸ΞδΞʂ

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ւ֎͸ ௨৴ճઢ͕ ஗͍

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STARTUP ASIA 2014 ˏ JAKARTA ւ֎Ͱ΋ૉఢͳ Wantedly ɹɹ ମݧΛ WoWoW

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Period is two weeks
 Dec 2014

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Team ৿ాઌੜ ME Full Time iOS Engineer iOS Engineer મ౬ཱྀਓ Half Time ιϑΝʔͰϖΞϓϩελΠϧͳ։ൃ :)

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Analyze

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New Relic MobileͰ෼ੳ ͬ͘͟ΓͳϘτϧωοΫௐࠪ

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Pony DebuggerͰࡉ͔͘෼ੳ ϦΫΤετ୯ҐͰࡉ͔͘ௐࠪ

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Pony Debuggerͷ࢓૊Έ iPhone Server Client Python CocoaPods Chrome Developer Tool

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Θ͔ͬͨ͜ͱ ɾJSONͷϦΫΤετʹΑΓ΋ը૾ͷ༰ྔ͕ଟ͍ ɾແବͳը૾ͷϦΫΤετ͕͋Δ
 ɾݟ͍ͤͨը૾ͷॱ൪ʹͳ͍ͬͯͳ͍

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PLAN ௨৴ྔͷେ൒Λ઎ΊΔ
 ը૾ͷ௨৴Λվળ͢Δ

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ը૾௨৴ͱݴ͑͹ SDWebImage

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SDWebImageͷίʔυΛಡΉ 63- 63- 63- 63- 63- 63- 63- 63- 63- 63- SDWebImageDownloader Request Queue SDWebImageDownloaderOperation UIImageView#sd_setImageWithURL

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SDWebImageͷίʔυΛಡΉ 63- SDWebImageDownloaderOperation Memory / Disk Cache SDWebImageManager

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SDWebImageͷόάΛൃݟʂ Ϛʔδ͞ΕͨΑʂ

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Let’s Kaizen

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ืूҰཡը૾ͷઌಡΈ ·ͩը໘্ʹදࣔ ͞Ε͍ͯͳ͍ը૾Λ ࣄલʹऔಘ

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SDWebImagePrefetcher @interface SDWebImagePrefetcher : NSObject 
 @property (strong, readonly) SDWebImageManager *manager; @property (assign) NSUInteger maxConcurrentDownloads; - (void)prefetchURLs:(NSArray *)urls; 63- 63- 63-

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ը૾Λऔಘ͢Δ༏ઌ౓෇͚ ߴ ௿ ߴ ௿ ௿ Priority

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SDWebImageOptions @interface UIImageView (WebCache) - (void)sd_setImageWithURL:(NSURL *)url placeholderImage: (UIImage *)placeholder options:(SDWebImageOptions)options; typedef NS_OPTIONS(NSUInteger, SDWebImageOptions) { SDWebImageLowPriority = 1 << 1, SDWebImageHighPriority = 1 << 8, Change Priority

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ભҠݩͷը૾औಘΛΩϟϯηϧ ભҠݩ ભҠઌ ௨৴Ωϟϯηϧ ભҠઌͷը૾Λ༏ઌͯ͠දࣔ

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SDWebImageManager#cancelAll @interface UIImageView (WebCache) - (void)sd_cancelCurrentImageLoad; @interface SDWebImageManager : NSObject - (void)cancelAll; 63- 63- 63- 63- SDWebImageDownloader Request Queue

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'BDFCPPL͕ޠΔϞόΠϧŋνϡʔχϯάͷۃҙɿ͜ΕͰ్্ࠃͷΠϯλʔωοτ΋0,ʂ ฐࣾCTO͔Βͷࢥ͠ঌ͠ Facebook͸90% ͷΠϝʔδͰ WebP ϑΥʔϚοτ͕༻͍ΒΕ͍ͯΔ “ Facebookܦ༝Ͱ஌ΔͳͲ “ ઀ଓεϐʔυ඼࣭ʹԠͯ͡ ػೳͷৼΔ෣͍Λదਖ਼Խ͍ͯ͘͠

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ը૾ϑΥʔϚοτΛWebPʹ 90KB 30KB SDWebImage͸WebPʹରԠ͍ͯ͠Δ

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SDWebImage/WebP Podfile
 pod ‘SDWebImage/WebP' $ pod install @interface UIImage (WebP) Only Install !

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Webpʹม׵͢Δը૾αʔόͷߏ੒ CloudFront S3 EC2 Docker nginx AWS iPhone ೚ҙʹϦαΠζ & WebPʹม׵ ΦϦδφϧը૾ Ωϟογϡը૾ ʢCDN)

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wantedly/nginx-image-server Open Source !!

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௨৴ଳҬʹΑΓऔಘ͢Δը૾αΠζΛมߋ ྑ͍ ѱ͍ ͘͢͝ ѱ͍ 100KB 25KB 6KB 16෼ͷ̍

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௨৴ଳҬͷਪଌ 63- ௨৴։࢝ɾऴྃͷܦա࣌ؒͱ डྖը૾αΠζ͔Βਪଌ 30KB

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௨৴ଳҬͷਪଌ MONITORING: kbps 108.73 [Excellent] average rtt 0.971914 MONITORING: kbps 108.73 [Excellent] average rtt 0.971914 MONITORING: kbps 108.73 [Excellent] average rtt 0.971914 MONITORING: rtt 0.17s, 0KB, Cached: YES, https://e4fb0db8addb.png MONITORING: rtt 0.32s, 0KB, Cached: NO, https://5af9694863de.png MONITORING: rtt 0.35s, 1KB, Cached: NO, https://9b-80a9-37eb4c7182ea.jpeg MONITORING: rtt 0.41s, 9KB, Cached: NO, https://510-a619-10701876ad0c.png MONITORING: rtt 0.01s, 8KB, Cached: YES, https://2aa3646d.jpeg MONITORING: kbps 189.65 [Excellent] average rtt 0.461638 MONITORING: rtt 0.52s, 27KB, Cached: NO, https://b5-bceda20f3034.png MONITORING: rtt 0.40s, 21KB, Cached: NO, https://54a-52cbe1efb0bc.jpeg MONITORING: rtt 0.82s, 33KB, Cached: NO, https://5b-1d537f677f61.png MONITORING: rtt 0.46s, 19KB, Cached: NO, https://-0461512b3080.jpeg MONITORING: rtt 0.26s, 36KB, Cached: NO, https://c2b-e88d33bb56dc.jpeg MONITORING: kbps 159.05 [Excellent] average rtt 0.515586 MONITORING: rtt 0.98s, 45KB, Cached: NO, https://83f6512cef.jpeg MONITORING: kbps 160.66 [Excellent] average rtt 0.569087 MONITORING: rtt 2.56s, 30KB, Cached: NO, https://65e-55cee3d4f2eb.jpeg MONITORING: kbps 130.23 [Excellent] average rtt 1.270392 MONITORING: rtt 2.53s, 11KB, Cached: NO, https://65e-55cee3d4f2eb.jpeg

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࠷େαΠζ͔ΒΩϟγϡը૾ΛνΣοΫ 63- େ த খ ᶃ ᶄ ᶅ ᶆ

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HOW? Ͳ͏΍ͬͯվળΛ֬ೝ͢Δͷʁ

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վળͷ֬ೝํ๏ ௨৴ͷଳҬΛ੍ݶͯ͠ମݧ͕Α͘ͳ͍ͬͯΔ͔

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One More Thing

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͞ΒͳΔվળํ๏Ҋ ɾMessagePackͰJSONΛѹॖ͢Δ ɾHTTP/2Ͱ௨৴ίωΫγϣϯΛ·ͱΊΔ ɾ௨৴ଳҬʹΑΔಉ࣌઀ଓ਺ͷௐ੔

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ΤϯδχΞืूͯ͠·͢ɿʣ ͓͠·͍