{"id":54747,"date":"2020-01-03T00:00:00","date_gmt":"2020-01-02T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/sravnenie-proizvoditelnosti-http-1-1-http-2-i-http-2-server-push"},"modified":"2020-02-18T14:02:48","modified_gmt":"2020-02-18T11:02:48","slug":"sravnenie-proizvoditelnosti-http-1-1-http-2-i-http-2-server-push","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/sravnenie-proizvoditelnosti-http-1-1-http-2-i-http-2-server-push","title":{"rendered":"Compararea performan\u021bei HTTP\/1.1, HTTP\/2 \u0219i HTTP\/2 + Server Push","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Publicate<\/a><\/noindex> rezultatele studiului performan\u021bei diferitelor metode de extragere a colec\u021biei de resurse, folosind protocoale HTTP\/1.1, HTTP\/2 \u0219i HTTP\/2 + Server Push pentru a accesa serverul. Studiul a evaluat de asemenea impactul asupra performan\u021bei al acces\u0103rii datelor solicitate din cache-ul browserului \u0219i manipularea resurselor la nivelul logicii aplica\u021biei (combinarea resurselor \u00eentr-un singur bloc JSON).<\/p>\n

Testarea performan\u021bei pentru 25 de cereri a ar\u0103tat rezultate \u00een general previzibile \u2014 o \u00eent\u00e2rziere semnificativ\u0103 pentru cererea prin HTTP\/1.1 cu cache-ul gol \u0219i o livrare a resurselor dintr-un singur bloc (teste cu eticheta \u00abcompound\u00bb). Performan\u021ba Firefox \u0219i Chrome a fost aproximativ la acela\u0219i nivel, dar prezen\u021ba datelor \u00een cache nu a dus la cre\u0219terea eficien\u021bei a\u0219teptate.<\/p>\n

\"Compararea<\/a><\/noindex><\/center><\/p>\n

Cu toate acestea, \u00een testul de procesare a 500 de cereri, a fost observat\u0103 o \u00eent\u00e2rziere semnificativ\u0103 a Chrome fa\u021b\u0103 de Firefox \u00een transmiterea unui num\u0103r mare de cereri \u0219i o \u00eent\u00e2rziere a Firefox fa\u021b\u0103 de Chrome \u00een utilizarea mecanismului Server Push \u0219i \u00een situa\u021biile \u00een care HTTP\/2 era utilizat, av\u00e2nd cea mai mare parte a datelor \u00een cache-ul browserului. Chrome a demonstrat o munc\u0103 mai eficient\u0103 cu cache-ul, iar Firefox o procesare mai eficient\u0103 a cererilor externe.<\/p>\n

\"Compararea<\/a><\/noindex><\/center><\/p>\n

\"Compararea<\/a><\/noindex><\/center><\/p>\n

\u00cen urma testelor, s-a concluzionat c\u0103 HTTP\/2 permite procesarea eficient\u0103 a cererilor separate dintr-o colec\u021bie mare de resurse. Diferen\u021bele de performan\u021b\u0103 \u00eentre metodele simple de livrare separat\u0103 a resurselor \u0219i cele \u00een care resursele sunt agregate \u00eentr-un singur bloc nu sunt at\u00e2t de semnificative \u00eenc\u00e2t s\u0103 justifice complicarea semnificativ\u0103 a logicii de procesare pe partea aplica\u021biei \u0219i server<\/a>. Agregarea are sens doar \u00een situa\u021biile \u00een care performan\u021ba are cea mai mare prioritate. C\u00e2nd simplificarea logicii \u0219i un API simplu sunt mai importante, are sens s\u0103 se utilizeze procesarea separat\u0103 a resurselor.<\/p>\n

O alt\u0103 concluzie este c\u0103 memoria cache a browserului, atunci c\u00e2nd se utilizeaz\u0103 HTTP\/2, nu are un impact semnificativ asupra performan\u021bei proces\u0103rii cererilor (executarea complet\u0103 a 501 cereri a fost cu 1,2 ori mai lent\u0103 dec\u00e2t executarea a 51 cereri cu 90% din cache plin \u00een Firefox \u0219i cu 2,3 ori \u00een Chrome). Utilizarea Server Push nu a demonstrat un beneficiu semnificativ \u00een Firefox, dar s-a dovedit eficient\u0103 \u00een \u00eenc\u0103rcarea unui num\u0103r mare de resurse \u00een Chrome. Autorii studiului au mai remarcat c\u0103 optimizarea p\u0103r\u021bii server are un impact mai semnificativ asupra performan\u021bei dec\u00e2t optimizarea codului client executat \u00een browser.<\/p>\n

<\/a><\/noindex><\/p>\n

Sursa: opennet.ro<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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