[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.sniezik.sk\/problem-dvoch-generalov\/#Article","mainEntityOfPage":"https:\/\/www.sniezik.sk\/problem-dvoch-generalov\/","headline":"Probl\u00e9m dvoch gener\u00e1lov","name":"Probl\u00e9m dvoch gener\u00e1lov","description":"Zamysleli ste sa niekedy nad t\u00fdm ako je mo\u017en\u00e9 \u017ee ak niekomu odo\u0161lete spr\u00e1vu, v z\u00e1p\u00e4t\u00ed u\u017e viete \u010di ju dostal alebo dokonca \u010di ju doty\u010dn\u00fd aj pre\u010d\u00edtal. Nebudeme tu bra\u0165 v \u00favahu \u010di je, alebo naopak nieje to spr\u00e1vne. Preto\u017ee z ur\u010dit\u00e9ho h\u013eadiska m\u00e1 ka\u017ed\u00fd n\u00e1rok na s\u00fakromie a taktie\u017e aj pr\u00e1vo vedie\u0165. To","datePublished":"2019-08-13","dateModified":"2023-04-28","author":{"@type":"Person","@id":"https:\/\/www.sniezik.sk\/author\/#Person","name":"","url":"https:\/\/www.sniezik.sk\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/0379e0c919e89f337c2f51ff1404922f8441b43281fb91f3719df99f70b9888f?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/0379e0c919e89f337c2f51ff1404922f8441b43281fb91f3719df99f70b9888f?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"sniezik.sk","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.sniezik.sk\/wp-content\/uploads\/img_a305568_w16853_t1567008667.jpg","url":"https:\/\/www.sniezik.sk\/wp-content\/uploads\/img_a305568_w16853_t1567008667.jpg","height":0,"width":0},"url":"https:\/\/www.sniezik.sk\/problem-dvoch-generalov\/","about":["Online"],"wordCount":456,"articleBody":"Zamysleli ste sa niekedy nad t\u00fdm ako je mo\u017en\u00e9 \u017ee ak niekomu odo\u0161lete spr\u00e1vu, v z\u00e1p\u00e4t\u00ed u\u017e viete \u010di ju dostal alebo dokonca \u010di ju doty\u010dn\u00fd aj pre\u010d\u00edtal. Nebudeme tu bra\u0165 v \u00favahu \u010di je, alebo naopak nieje to spr\u00e1vne. Preto\u017ee z ur\u010dit\u00e9ho h\u013eadiska m\u00e1 ka\u017ed\u00fd n\u00e1rok na s\u00fakromie a taktie\u017e aj pr\u00e1vo vedie\u0165. To \u010di sa u\u017e nejedn\u00e1 o \u0161pehovanie to rad\u0161ej nechajme na pr\u00e1vnikov. My si tu rad\u0161ej pribl\u00ed\u017eime ak to vlastne funguje. Youtuber Tom Scott to nazval \u201eProbl\u00e9m dvoch gener\u00e1lov\u201c.\u00a0Z poh\u013eadu informatiky nast\u00e1va tento probl\u00e9m zaka\u017ed\u00fdm ke\u010f odo\u0161lete spr\u00e1vu a \u010dak\u00e1te na odpove\u010f. \u010cak\u00e1te kedy sa zemn\u00ed ikona na odoslan\u00e9, prijat\u00e9 , pre\u010d\u00edtan\u00e9 \u010di \u010doko\u013evek in\u00e9 \u010do v\u00e1m d\u00e1 vedie\u0165 \u017ee spr\u00e1va do\u0161la a bola pre\u010d\u00edtan\u00e1. Hoci sa zd\u00e1 \u017ee dnes je u\u017e internetov\u00e9 spojenie prakticky 100% spo\u013eahliv\u00e9 opak je pravdou. Do samotn\u00e9ho procesu spad\u00e1 ve\u013ea vec\u00ed ako napr\u00edklad kvalita pripojenia, oblas\u0165 kde sa nach\u00e1dzate, poskytovate\u013e alebo aj samotn\u00e9 va\u0161e zariadenie. No a tu si e\u0161te vezmite \u017ee je potrebn\u00e9 vyrie\u0161i\u0165 nielen to aby sa va\u0161a spr\u00e1va dostala kam je treba ale aby ste sa o tom v kone\u010dnom d\u00f4sledku aj dozvedeli.\u00a0Probl\u00e9m dvoch gener\u00e1lov spo\u010d\u00edva v tom \u017ee sa medzi ich arm\u00e1dami nach\u00e1dza hrad ktor\u00fd dobyj\u00fa iba spolo\u010dne. A na to aby to dok\u00e1zali mus\u00ed jeden druh\u00e9mu vysla\u0165 posla s spr\u00e1vou kedy \u00fatok za\u010dne a posol sa mus\u00ed vr\u00e1ti\u0165 sp\u00e4\u0165. Ak sa to nepodar\u00ed alebo posla zajm\u00fa je koniec a \u00fatok sa nepodar\u00ed. Rie\u0161en\u00edm by bolo posla\u0165 viac poslov s rovnakou spr\u00e1vou ale to tie\u017e nie je ide\u00e1lne preto\u017ee sa zvy\u0161uje riziko prezradenia a tak je to prakticky nerie\u0161ite\u013en\u00fd\u00a0 probl\u00e9m. Aspo\u0148 \u010do sa dob\u00fdvania hradu t\u00fdka. Naproti tomu v informatike funguje jedno podobn\u00e9 hoci aj tu treba poveda\u0165 \u017ee nie 100% rie\u0161enie. No na dan\u00fd \u00fa\u010del to sta\u010d\u00ed. Presnej\u0161ie sa jedn\u00e1 o to \u017ee ka\u017ed\u00e1 spr\u00e1va obsahuje svoj jedine\u010dn\u00fd identifik\u00e1tor. Tak\u00fdchto spr\u00e1v je ale odoslan\u00fdch viac ako jedna a ka\u017ed\u00e1 m\u00e1 rovnak\u00fd identifik\u00e1tor a preto ak spr\u00e1va doraz\u00ed k adres\u00e1tovi ostatn\u00e9 s\u00fa jednoducho ignorovan\u00e9. To sam\u00e9 sa potom deje aj sp\u00e4tne pri odoslan\u00ed potvrdenia o doru\u010den\u00ed alebo pre\u010d\u00edtan\u00ed spr\u00e1vy. Tak\u00fdmto jednoduch\u00fdm sp\u00f4sobom je teda zabezpe\u010den\u00e9 \u017ee spr\u00e1va ako aj potvrdenie o spr\u00e1ve doraz\u00ed kam a kedy m\u00e1.                                                                                                                                                                                                                                                                                                                                                                                        4.4\/5 - (8 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Probl\u00e9m dvoch gener\u00e1lov","item":"https:\/\/www.sniezik.sk\/problem-dvoch-generalov\/#breadcrumbitem"}]}]