JIT Λࡴ͢ཁҼҰཡ (v8) • ܕใͷෆҰக • not int32 (integer ͡Όͳ͔ͬͨ) • not a string (จࣈྻ͡Όͳ͔ͬͨ) • not an array index (ྻͷఴࣈ͡Ό ͳ͔ͬͨ) • etc https://github.com/v8/v8/blob/master/src/deoptimizer/deoptimize-reason.h • ༧ظͤ͵ૢ࡞ • cow array's elements changed (ίϐʔͨ͠ྻ͕มߋ͞Εͨ) • division by zero (θϩআࢉ) • Out of bounds (ྻͷൣғ͑) • etc
JIT Λࡴ͢ཁҼҰཡ (v8) • ܕใͷෆҰக • not int32 (integer ͡Όͳ͔ͬͨ) • not a string (จࣈྻ͡Όͳ͔ͬͨ) • not an array index (ྻͷఴࣈ͡Ό ͳ͔ͬͨ) • etc https://github.com/v8/v8/blob/master/src/deoptimizer/deoptimize-reason.h • ༧ظͤ͵ૢ࡞ • cow array's elements changed (ίϐʔͨ͠ྻ͕มߋ͞Εͨ) • division by zero (θϩআࢉ) • Out of bounds (ྻͷൣғ͑) • etc ֮͑Δඞཁͳ͍͕ɺॻ࣌͘ʹʮԿΛ͠ͳ͍ํ͕͍͍͔ʯΛ ͓͍ͬͯͨ΄͏͕ྑ͍ɻ
ؓٳ TLS/1.3 • TLS 1.3 Ͱ࠷ॳͷଓ࣌ʹϥϯυτϦοϓΛݮΒ͢ࢼΈΛ͍ͯ͠Δɻ • 0-RTT ͱݺΕΔΈͰ͍͖ͳΓ Client ͕ Hello Λඈͯ͠σʔλΛ ૹΔ͜ͱՄೳʹɻ Making the web faster with HTTP/3 by kazuho https://vimeo.com/485450984
4FSWFS GET /main.css GET /main.js GET /image0.png σʔλͷΓऔΓ GET /index.html 200 OK 200 OK 404 Not Found 304 Not Modified )551্ͰσʔλͷΓऔΓ͕ߦΘΕɺͦΕ͕ϨϯμϦϯάϓ ϩηε+4Τϯδϯ͕࣮ߦ͞ΕΔϑΣʔζΛܦͯϖʔδ͕ग़Δ
Cache Storage • ϨεϙϯεΛΩϟογϡ͢ΔΈ 4FSWFS GET /main.css GET /main.js GET /image0.png GET /index.html 200 OK 200 OK 404 Not Found 304 Not Modified Ұճμϯϩʔυͨ͠ϑΝΠϧωοτϫʔΫ͔ΒಡΈࠐΈͨ ͘ͳ͍ɻ࠶ར༻͍ͨ͠ɻ
Cookie Storage id pass 4FSWFS GET / 302 Redirect GET /login 200 OK POST /login id=foo&pass=xxx 302 Redirect Set-Cookie: session=xxx GET / cookie: session=xxx
Cookie Storage id pass 4FSWFS GET / 302 Redirect GET /login 200 OK POST /login id=foo&pass=xxx 302 Redirect Set-Cookie: session=xxx GET / cookie: session=xxx 4FTTJPO$PPLJFΛ࡞Δ·ͰͷྲྀΕ
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