{"id":3611,"date":"2026-10-27T09:30:00","date_gmt":"2026-10-27T09:30:00","guid":{"rendered":"https:\/\/potenting.com\/ca\/blog\/what-is-caching-how-it-works-and-why-it-matters\/"},"modified":"2026-10-27T09:53:39","modified_gmt":"2026-10-27T09:53:39","slug":"what-is-caching-how-it-works-and-why-it-matters-ca","status":"publish","type":"post","link":"https:\/\/potenting.com\/ca\/blog\/what-is-caching-how-it-works-and-why-it-matters\/","title":{"rendered":"Qu\u00e8 \u00e9s la mem\u00f2ria cau? Com funciona i per qu\u00e8 \u00e9s important"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"3611\" class=\"elementor elementor-3611\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9ef0e68 e-flex e-con-boxed e-con e-parent\" data-id=\"9ef0e68\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d5c5c70 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"d5c5c70\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;exclude_headings_by_selector&quot;:[],&quot;no_headings_message&quot;:&quot;No s&#039;han trobat encap\\u00e7alaments en aquesta p\\u00e0gina.&quot;,&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;,&quot;h4&quot;,&quot;h5&quot;,&quot;h6&quot;],&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<div class=\"elementor-toc__header-title\">\n\t\t\t\tTaula de continguts\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__d5c5c70\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__d5c5c70\" aria-expanded=\"true\" aria-label=\"Close table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__d5c5c70\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-917074d e-flex e-con-boxed e-con e-parent\" data-id=\"917074d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-21f2763 elementor-widget elementor-widget-text-editor\" data-id=\"21f2763\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Imagina que, cada vegada que visites un lloc web, aquest ha de processar totes les dades des de zero per carregar les imatges, mostrar les p\u00e0gines o recuperar informaci\u00f3. Aix\u00f2 no nom\u00e9s augmenta els temps de resposta, sin\u00f3 que tamb\u00e9 exerceix una pressi\u00f3 addicional sobre el servidor i els recursos del sistema. Aqu\u00ed \u00e9s on entra en joc la mem\u00f2ria cau. En emmagatzemar les dades a les quals s&#8217;accedeix amb freq\u00fc\u00e8ncia en una mem\u00f2ria m\u00e9s r\u00e0pida, la mem\u00f2ria cau pot reduir els temps d&#8217;acc\u00e9s a les dades i millorar el rendiment del sistema. Per\u00f2 com funciona la mem\u00f2ria cau, quins tipus n&#8217;hi ha i quins reptes poden sorgir en utilitzar-la?<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3cda91c e-flex e-con-boxed e-con e-parent\" data-id=\"3cda91c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-641c43c elementor-widget elementor-widget-text-editor\" data-id=\"641c43c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Qu\u00e8 \u00e9s la mem\u00f2ria cau?<\/h2><p>L&#8217;emmagatzematge en mem\u00f2ria cau \u00e9s el proc\u00e9s de desar les dades que s&#8217;utilitzen amb freq\u00fc\u00e8ncia en una mem\u00f2ria espec\u00edfica. Suposem que necessites accedir a una aplicaci\u00f3 o a una dada concreta cada pocs minuts. Com que s&#8217;hi accedeix sovint, aquesta dada s&#8217;emmagatzema en un lloc anomenat mem\u00f2ria cau perqu\u00e8 no calgui recuperar-la cada vegada que la fas servir. Hi ha moltes raons per utilitzar la mem\u00f2ria cau, per\u00f2 una de les m\u00e9s importants \u00e9s reduir el temps d&#8217;acc\u00e9s a les dades.<\/p><p>Els discos durs s\u00f3n lents, i ni tan sols els m\u00e9s r\u00e0pids poden igualar la velocitat de la RAM i del processador. Per aquest motiu, recuperar-ne dades requereix temps. La mem\u00f2ria cau, en canvi, \u00e9s diferent perqu\u00e8 \u00e9s un tipus de mem\u00f2ria d&#8217;alta velocitat. Aquest tipus de mem\u00f2ria t\u00e9 una capacitat limitada i nom\u00e9s pot emmagatzemar les dades a les quals s&#8217;accedeix amb freq\u00fc\u00e8ncia.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-35dac7d e-flex e-con-boxed e-con e-parent\" data-id=\"35dac7d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6af3baa elementor-widget elementor-widget-text-editor\" data-id=\"6af3baa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Tipus de mem\u00f2ria cau<\/h2><p>En aquesta secci\u00f3 repassarem els diferents tipus de mem\u00f2ria cau i les seves aplicacions.<\/p><ul><li><h3>Mem\u00f2ria cau del costat del client<\/h3>En aquest m\u00e8tode, les dades s&#8217;emmagatzemen al costat del client, normalment en un navegador web. El navegador pot desar a la seva mem\u00f2ria cau c\u00f2pies de p\u00e0gines web i de recursos com ara imatges, de manera que es puguin mostrar en visites posteriors sense haver-los de recuperar de nou del servidor. Per exemple, comprovant quan es va modificar una p\u00e0gina per \u00faltima vegada, el navegador pot determinar si la versi\u00f3 emmagatzemada a la mem\u00f2ria cau encara \u00e9s v\u00e0lida.<\/li><li><h3>Mem\u00f2ria cau del costat del servidor<\/h3>En aquest m\u00e8tode, les dades s&#8217;emmagatzemen al costat del servidor per respondre les sol\u00b7licituds m\u00e9s r\u00e0pidament i reduir la c\u00e0rrega del servidor i de la xarxa. Un exemple \u00e9s l&#8217;\u00fas d&#8217;un servidor intermediari (proxy) amb mem\u00f2ria cau, que pot emmagatzemar el contingut sol\u00b7licitat i oferir aquest mateix contingut a altres usuaris quan calgui. DynaCache a IBM WebSphere Application Server \u00e9s un altre exemple de mecanisme de mem\u00f2ria cau del costat del servidor.<\/li><li><h3>Mem\u00f2ria cau de p\u00e0gina completa<\/h3>En aquest m\u00e8tode, s&#8217;emmagatzema una c\u00f2pia de tota la p\u00e0gina web renderitzada perqu\u00e8, en sol\u00b7licituds posteriors, la p\u00e0gina es pugui lliurar sense haver d&#8217;executar de nou tots els processos de generaci\u00f3 de contingut. Tanmateix, aquest m\u00e8tode nom\u00e9s \u00e9s adequat quan el contingut de la p\u00e0gina es pot emmagatzemar a la mem\u00f2ria cau i se&#8217;n gestionen correctament els canvis.<\/li><li><h3>Mem\u00f2ria cau de fragments<\/h3>En aquest m\u00e8tode, en lloc d&#8217;emmagatzemar tota la p\u00e0gina, es desen a la mem\u00f2ria cau seccions espec\u00edfiques de manera independent. Aquest enfocament \u00e9s \u00fatil quan una p\u00e0gina cont\u00e9 tant contingut est\u00e0tic com din\u00e0mic. En emmagatzemar a la mem\u00f2ria cau les seccions que es poden desar, es pot millorar el rendiment de la p\u00e0gina sense haver de desar-la sencera com una sola unitat.<\/li><li><h3>Mem\u00f2ria cau de contingut est\u00e0tic<\/h3>Aquest m\u00e8tode s&#8217;utilitza per emmagatzemar contingut que canvia poc, com ara imatges gr\u00e0fiques i fitxers de text. Com que aquest contingut normalment no requereix actualitzacions freq\u00fcents, desar-ne una c\u00f2pia a la mem\u00f2ria cau pot reduir el nombre de sol\u00b7licituds al servidor d&#8217;origen i disminuir els temps de c\u00e0rrega de les p\u00e0gines.<\/li><li><h3>Mem\u00f2ria cau de contingut din\u00e0mic<\/h3>En aquest m\u00e8tode, es desa a la mem\u00f2ria cau contingut que pot canviar sovint o que es genera en funci\u00f3 de la informaci\u00f3 i les condicions de l&#8217;usuari. Com que el contingut din\u00e0mic pot estar personalitzat, \u00e9s especialment important gestionar la validesa de la mem\u00f2ria cau i determinar quan cal actualitzar-la. DynaCache a IBM WebSphere Application Server \u00e9s un exemple de soluci\u00f3 per a la mem\u00f2ria cau de contingut din\u00e0mic.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e10552c elementor-widget elementor-widget-image\" data-id=\"e10552c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"708\" src=\"https:\/\/potenting.com\/blog\/wp-content\/uploads\/2026\/10\/Types-of-Caching.webp\" class=\"attachment-large size-large wp-image-3497\" alt=\"Types of Caching\" srcset=\"https:\/\/potenting.com\/blog\/wp-content\/uploads\/2026\/10\/Types-of-Caching.webp 800w, https:\/\/potenting.com\/blog\/wp-content\/uploads\/2026\/10\/Types-of-Caching-300x266.webp 300w, https:\/\/potenting.com\/blog\/wp-content\/uploads\/2026\/10\/Types-of-Caching-768x680.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-137bc46 e-flex e-con-boxed e-con e-parent\" data-id=\"137bc46\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5777338 elementor-widget elementor-widget-text-editor\" data-id=\"5777338\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Per qu\u00e8 hauries d&#8217;utilitzar la mem\u00f2ria cau?<\/h2><p>Com s&#8217;ha esmentat anteriorment, una de les raons per utilitzar la mem\u00f2ria cau \u00e9s augmentar la velocitat d&#8217;acc\u00e9s a les dades d&#8217;\u00fas freq\u00fcent. A m\u00e9s, la mem\u00f2ria cau redueix la c\u00e0rrega de processament del servidor. Per\u00f2 per qu\u00e8?<\/p><p>Quan un sistema necessita sovint una dada concreta i l&#8217;ha de recuperar de l&#8217;emmagatzematge, no nom\u00e9s triga m\u00e9s temps, sin\u00f3 que tamb\u00e9 implica un processament addicional per part de la CPU i d&#8217;altres recursos del sistema. En canvi, si aquesta dada est\u00e0 disponible a la mem\u00f2ria cau, el sistema pot accedir-hi i recuperar-la sense haver d&#8217;accedir de nou a l&#8217;emmagatzematge.<\/p><p>La mem\u00f2ria cau tamb\u00e9 ofereix altres avantatges, que s&#8217;entenen m\u00e9s f\u00e0cilment amb un exemple. Suposem que tens 10 GB de dades que cal emmagatzemar. Com que el processador \u00e9s molt m\u00e9s r\u00e0pid que el sistema d&#8217;emmagatzematge, \u00e9s possible que aquest no pugui desar les dades a la mateixa velocitat. Aqu\u00ed \u00e9s on entra en joc la mem\u00f2ria cau. El processador envia les dades a la mem\u00f2ria cau, i aquesta les lliura al sistema d&#8217;emmagatzematge a un ritme adequat. Aix\u00f2 permet que el processador continu\u00ef treballant sense retards innecessaris i, alhora, garanteix que les dades s&#8217;emmagatzemin correctament.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1196b3f e-flex e-con-boxed e-con e-parent\" data-id=\"1196b3f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-730d422 elementor-widget elementor-widget-text-editor\" data-id=\"730d422\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Com afecta l&#8217;allotjament al rendiment d&#8217;un lloc web?<\/h2><p>La mem\u00f2ria cau pot millorar significativament el rendiment d&#8217;un lloc web, per\u00f2 no \u00e9s l&#8217;\u00fanic factor que determina la rapidesa amb qu\u00e8 es carrega. La infraestructura d&#8217;allotjament tamb\u00e9 hi t\u00e9 un paper important. Els recursos del servidor, com ara la CPU, la RAM, la velocitat d&#8217;emmagatzematge i el rendiment de la xarxa, poden influir en la rapidesa amb qu\u00e8 es processen les sol\u00b7licituds, sobretot quan un lloc web rep molt de tr\u00e0nsit.<\/p><p>Fins i tot amb una estrat\u00e8gia de mem\u00f2ria cau efica\u00e7, el rendiment del lloc web pot continuar sent deficient si l&#8217;entorn d&#8217;allotjament no \u00e9s capa\u00e7 de gestionar eficientment la c\u00e0rrega de treball del lloc. Triar un servei d&#8217;allotjament amb recursos suficients i un rendiment fiable pot ajudar a reduir els temps de resposta del servidor i a millorar l&#8217;experi\u00e8ncia de l&#8217;usuari. Per tant, si vols millorar la velocitat i el rendiment del teu lloc web, explorar plans d&#8217;<a href=\"\/ca\/webhosting\/\">allotjament web<\/a> que s&#8217;adaptin a les necessitats del teu lloc pot ser un pas efica\u00e7, juntament amb l&#8217;aplicaci\u00f3 de t\u00e8cniques d&#8217;optimitzaci\u00f3.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7570a06 e-flex e-con-boxed e-con e-parent\" data-id=\"7570a06\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b3af328 elementor-widget elementor-widget-text-editor\" data-id=\"b3af328\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Com funciona la mem\u00f2ria cau?<\/h2><p>La mem\u00f2ria cau n&#8217;hi ha de diferents tipus i \u00e9s una forma d&#8217;emmagatzematge. Quan se sol\u00b7liciten unes dades, primer es comprova la mem\u00f2ria cau abans de recuperar-les del disc dur. Tanmateix, com que la mem\u00f2ria cau t\u00e9 una capacitat limitada, no s&#8217;hi poden emmagatzemar totes les dades del sistema. Per tant, el sistema ha de determinar quines dades s&#8217;hi han de desar.<\/p><p>D&#8217;altra banda, quan la mem\u00f2ria cau \u00e9s plena i cal afegir-hi dades noves a les quals s&#8217;accedeix amb freq\u00fc\u00e8ncia, el sistema ha de decidir quines dades existents s&#8217;han d&#8217;eliminar. Per a aquest prop\u00f2sit hi ha diversos algorismes, que avaluen quines dades tenen menys probabilitats de tornar-se a utilitzar.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4ee719d e-flex e-con-boxed e-con e-parent\" data-id=\"4ee719d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-51b9e52 elementor-widget elementor-widget-text-editor\" data-id=\"51b9e52\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Qu\u00e8 \u00e9s una fallada de mem\u00f2ria cau (cache miss)?<\/h2><p>Quan una aplicaci\u00f3 sol\u00b7licita diferents tipus de dades, les sol\u00b7licituds s&#8217;envien a la mem\u00f2ria cau. Si les dades sol\u00b7licitades no hi s\u00f3n disponibles, el nombre de fallades de mem\u00f2ria cau augmenta. Aix\u00f2 vol dir que el sistema ha accedit diverses vegades a la mem\u00f2ria cau, per\u00f2, com que les dades necess\u00e0ries no hi eren, les ha hagut de recuperar de l&#8217;emmagatzematge.<\/p><p>Aix\u00f2 redueix el rendiment del sistema. Per resoldre aquest problema, es pot augmentar la capacitat de la mem\u00f2ria cau.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-82c6df1 e-flex e-con-boxed e-con e-parent\" data-id=\"82c6df1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cafb898 elementor-widget elementor-widget-text-editor\" data-id=\"cafb898\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Qu\u00e8 \u00e9s una controladora RAID?<\/h2><p>Una controladora RAID \u00e9s un component de maquinari dels servidors dissenyat espec\u00edficament per millorar el rendiment de la mem\u00f2ria cau i de l&#8217;emmagatzematge. Amb l&#8217;ajuda de mem\u00f2ria flaix, la seva mem\u00f2ria cau proporciona capacitat d&#8217;emmagatzematge addicional i millora significativament el rendiment del servidor.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ef3e64c e-flex e-con-boxed e-con e-parent\" data-id=\"ef3e64c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-740b1f3 elementor-widget elementor-widget-text-editor\" data-id=\"740b1f3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Reptes de la mem\u00f2ria cau<\/h2><ul><li>Mem\u00f2ria cau local: emmagatzemar versions diferents de les mateixes dades en diversos sistemes pot provocar incoher\u00e8ncies en les dades i reduir l&#8217;efici\u00e8ncia de la mem\u00f2ria cau.<\/li><li>Problema de coher\u00e8ncia de la mem\u00f2ria cau: quan les dades canvien en una mem\u00f2ria cau, mantenir sincronitzades les c\u00f2pies corresponents d&#8217;aquestes dades en altres mem\u00f2ries cau esdev\u00e9 un repte.<\/li><li>Penetraci\u00f3 de la mem\u00f2ria cau: es produeix quan les dades sol\u00b7licitades no existeixen ni a la mem\u00f2ria cau ni a la base de dades original. L&#8217;\u00fas d&#8217;un filtre de Bloom pot ajudar a reduir aquest problema.<\/li><li>Allau de la mem\u00f2ria cau: una fallada de la mem\u00f2ria cau o la caducitat simult\u00e0nia d&#8217;un gran nombre d&#8217;elements emmagatzemats pot enviar un volum massiu de sol\u00b7licituds a la base de dades i provocar possibles interrupcions. L&#8217;\u00fas d&#8217;un cl\u00faster de mem\u00f2ria cau i d&#8217;eines com Hystrix pot ajudar a mitigar aquest problema.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b3cff08 e-flex e-con-boxed e-con e-parent\" data-id=\"b3cff08\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e55c7cb elementor-widget elementor-widget-text-editor\" data-id=\"e55c7cb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>En definitiva<\/h2><p>La mem\u00f2ria cau \u00e9s una manera efica\u00e7 de millorar el rendiment del sistema, reduir els temps d&#8217;acc\u00e9s a les dades i disminuir la c\u00e0rrega de processament dels servidors. Segons els requisits del sistema, es poden utilitzar diferents m\u00e8todes de mem\u00f2ria cau per emmagatzemar les dades d&#8217;acc\u00e9s freq\u00fcent i lliurar-les m\u00e9s r\u00e0pidament. Tanmateix, triar l&#8217;estrat\u00e8gia de mem\u00f2ria cau adequada i gestionar correctament les dades emmagatzemades \u00e9s essencial per mantenir el rendiment i evitar problemes com les fallades de mem\u00f2ria cau, els problemes de coher\u00e8ncia i les allaus de mem\u00f2ria cau. Entendre com funciona la mem\u00f2ria cau, els seus diferents tipus i els reptes que pot comportar t&#8217;ajuda a prendre millors decisions a l&#8217;hora de dissenyar i optimitzar sistemes.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-56aa431 e-flex e-con-boxed e-con e-parent\" data-id=\"56aa431\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-4cd24fe e-con-full e-flex e-con e-child\" data-id=\"4cd24fe\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3c9b0eb elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"3c9b0eb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-question-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119.043 8 8 119.083 8 256c0 136.997 111.043 248 248 248s248-111.003 248-248C504 119.083 392.957 8 256 8zm0 448c-110.532 0-200-89.431-200-200 0-110.495 89.472-200 200-200 110.491 0 200 89.471 200 200 0 110.53-89.431 200-200 200zm107.244-255.2c0 67.052-72.421 68.084-72.421 92.863V300c0 6.627-5.373 12-12 12h-45.647c-6.627 0-12-5.373-12-12v-8.659c0-35.745 27.1-50.034 47.579-61.516 17.561-9.845 28.324-16.541 28.324-29.579 0-17.246-21.999-28.693-39.784-28.693-23.189 0-33.894 10.977-48.942 29.969-4.057 5.12-11.46 6.071-16.666 2.124l-27.824-21.098c-5.107-3.872-6.251-11.066-2.644-16.363C184.846 131.491 214.94 112 261.794 112c49.071 0 101.45 38.304 101.45 88.8zM298 368c0 23.159-18.841 42-42 42s-42-18.841-42-42 18.841-42 42-42 42 18.841 42 42z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fee56b6 e-con-full e-flex e-con e-child\" data-id=\"fee56b6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6b539ae elementor-widget elementor-widget-text-editor\" data-id=\"6b539ae\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Preguntes freq\u00fcents<\/h2>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1cbe91b elementor-widget elementor-widget-text-editor\" data-id=\"1cbe91b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3>1. Com funcionen els algorismes d&#8217;expulsi\u00f3 de la mem\u00f2ria cau?<\/h3><p style=\"padding-left: 40px;\">Els algorismes d&#8217;expulsi\u00f3 de la mem\u00f2ria cau determinen quines dades s&#8217;han d&#8217;eliminar quan la mem\u00f2ria cau arriba al l\u00edmit de la seva capacitat. Algorismes com LRU (Least Recently Used, utilitzat menys recentment) i LFU (Least Frequently Used, utilitzat menys freq\u00fcentment) seleccionen les dades en funci\u00f3 de com de recentment o com de sovint s&#8217;hi ha accedit.<\/p><p style=\"padding-left: 40px;\">L&#8217;\u00fas de tots dos m\u00e8todes millora la seguretat dels servidors dedicats i la disponibilitat del servei.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-37e992e elementor-widget elementor-widget-text-editor\" data-id=\"37e992e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3>2. Qu\u00e8 \u00e9s la coher\u00e8ncia de la mem\u00f2ria cau i per qu\u00e8 \u00e9s important?<\/h3><p style=\"padding-left: 40px;\">La coher\u00e8ncia de la mem\u00f2ria cau garanteix que diverses c\u00f2pies de les mateixes dades emmagatzemades en mem\u00f2ria cau es mantinguin coherents quan es produeixen canvis. \u00c9s especialment important en sistemes distribu\u00efts i en entorns multiprocessador, on diverses mem\u00f2ries cau poden emmagatzemar c\u00f2pies de les mateixes dades.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Imagina que, cada vegada que visites un lloc web, aquest ha de processar totes les dades des de zero per carregar les imatges, mostrar les p\u00e0gines o recuperar informaci\u00f3. Aix\u00f2 no nom\u00e9s augmenta els temps de resposta, sin\u00f3 que tamb\u00e9 exerceix una pressi\u00f3 addicional sobre el servidor i els recursos del sistema. Aqu\u00ed \u00e9s on [\u2026]<\/p>\n","protected":false},"author":7,"featured_media":3490,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3611","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Qu\u00e8 \u00e9s la mem\u00f2ria cau i com afecta la velocitat web?<\/title>\n<meta name=\"description\" content=\"Descobreix qu\u00e8 \u00e9s la mem\u00f2ria cau, com funciona, els seus tipus, avantatges i reptes, i com millora la velocitat web i el rendiment del servidor.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/potenting.com\/ca\/blog\/what-is-caching-how-it-works-and-why-it-matters\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Qu\u00e8 \u00e9s la mem\u00f2ria cau i com afecta la velocitat web?\" \/>\n<meta property=\"og:description\" content=\"Descobreix qu\u00e8 \u00e9s la mem\u00f2ria cau, com funciona, els seus tipus, avantatges i reptes, i com millora la velocitat web i el rendiment del servidor.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/potenting.com\/ca\/blog\/what-is-caching-how-it-works-and-why-it-matters\/\" \/>\n<meta property=\"og:site_name\" content=\"Potenting Blog\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-27T09:30:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-27T09:53:39+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/potenting.com\/blog\/wp-content\/uploads\/2026\/10\/Dedicated-Server-Security-2.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"966\" \/>\n\t<meta property=\"og:image:height\" content=\"665\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Nina Ash\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nina Ash\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"10 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/potenting.com\\\/ca\\\/blog\\\/what-is-caching-how-it-works-and-why-it-matters\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/potenting.com\\\/ca\\\/blog\\\/what-is-caching-how-it-works-and-why-it-matters\\\/\"},\"author\":{\"name\":\"Nina Ash\",\"@id\":\"https:\\\/\\\/potenting.com\\\/blog\\\/#\\\/schema\\\/person\\\/743a7b4616c4d55a0ed17f5ac379fcdb\"},\"headline\":\"Qu\u00e8 \u00e9s la mem\u00f2ria cau? 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