{"id":47513,"date":"2022-11-28T11:10:54","date_gmt":"2022-11-28T11:10:54","guid":{"rendered":"https:\/\/kinsta.com\/se\/?p=47513&#038;post_type=knowledgebase&#038;preview_id=47513"},"modified":"2025-10-01T20:01:49","modified_gmt":"2025-10-01T20:01:49","slug":"vad-ar-nginx","status":"publish","type":"post","link":"https:\/\/kinsta.com\/se\/blog\/vad-ar-nginx\/","title":{"rendered":"Vad \u00e4r Nginx? En grundl\u00e4ggande titt p\u00e5 vad det \u00e4r och hur det fungerar"},"content":{"rendered":"<p><a href=\"https:\/\/www.nginx.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">Nginx<\/a>, som uttalas &#8221;engine-ex&#8221;, \u00e4r en webbserver med \u00f6ppen k\u00e4llkod. Det har sedan den f\u00f6rsta framg\u00e5ngen som webbserver nu \u00e4ven b\u00f6rjat att anv\u00e4ndas som <a href=\"https:\/\/kinsta.com\/se\/blog\/omvand-proxy\/\">omv\u00e4nd proxy<\/a>, HTTP-cache och belastningsutj\u00e4mning.<\/p>\n<p>N\u00e5gra v\u00e4lk\u00e4nda f\u00f6retag som anv\u00e4nder Nginx \u00e4r Autodesk, Atlassian, Intuit, T-Mobile, GitLab, DuckDuckGo, Microsoft, IBM, Google, Adobe, Salesforce, VMWare, Xerox, LinkedIn, LinkedIn, Cisco, Cisco, Facebook, Target, Citrix Systems, Twitter, Apple, Intel och m\u00e5nga fler (<a href=\"https:\/\/siftery.com\/company\/nginx\" target=\"_blank\" rel=\"noopener noreferrer\">k\u00e4lla<\/a>).<\/p>\n<p>Nginx skapades ursprungligen av Igor Sysoev, och den f\u00f6rsta offentliga versionen kom i oktober \u00e5r 2004. Igor utformade ursprungligen programvaran som ett svar p\u00e5 <a href=\"https:\/\/en.wikipedia.org\/wiki\/C10k_problem\" target=\"_blank\" rel=\"noopener noreferrer\">C10k-problemet<\/a>, vilket r\u00f6r prestandaproblemet med att hantera 10 000 samtidiga anslutningar.<\/p>\n<p>Eftersom Nginx har sina r\u00f6tter i prestandaoptimering i stor skala, s\u00e5 presterar Nginx ofta b\u00e4ttre \u00e4n andra popul\u00e4ra webbservrar i riktm\u00e4rkestester, s\u00e4rskilt i situationer med statiskt inneh\u00e5ll och\/eller m\u00e5nga samtidiga f\u00f6rfr\u00e5gningar. Detta \u00e4r anledningen till att <a href=\"https:\/\/kinsta.com\/se\/wordpress-hosting\/\">Kinsta anv\u00e4nder Nginx<\/a> f\u00f6r att driva sitt hosting.<\/p>\n<ul>\n<li><a href=\"#how-nginx-works\">Hur fungerar Nginx?<\/a><\/li>\n<li><a href=\"#nginx-vs-apache-stats\">Anv\u00e4ndningsstatistik f\u00f6r Nginx vs Apache<\/a><\/li>\n<li><a href=\"#check-running-nginx-apache\">Hur du kontrollerar om du k\u00f6r NGINX eller Apache<\/a><\/li>\n<\/ul>\n<h2 id=\"how-nginx-works\">Hur fungerar Nginx?<\/h2>\n<p>Nginx \u00e4r byggt f\u00f6r att erbjuda en <strong>l\u00e5g minnesanv\u00e4ndning<\/strong> och h\u00f6g samtidighet. I st\u00e4llet f\u00f6r att skapa nya processer f\u00f6r varje webbf\u00f6rfr\u00e5gan s\u00e5 anv\u00e4nder Nginx ett asynkront, h\u00e4ndelsestyrt tillv\u00e4gag\u00e5ngss\u00e4tt d\u00e4r f\u00f6rfr\u00e5gningar hanteras i en enda tr\u00e5d.<\/p>\n<p>Med Nginx s\u00e5 kan en huvudprocess styra flera arbetsprocesser. Huvudprocessen underh\u00e5ller arbetsprocesserna medan bearbetarna utf\u00f6r den faktiska bearbetningen. Eftersom Nginx \u00e4r asynkron s\u00e5 kan varje beg\u00e4ran utf\u00f6ras av bearbetaren samtidigt utan att blockera andra beg\u00e4randen.<\/p>\n<p>N\u00e5gra vanliga funktioner i Nginx \u00e4r f\u00f6ljande:<\/p>\n<ul>\n<li>Omv\u00e4nd proxy med cachelagring<\/li>\n<li>IPv6<\/li>\n<li>Belastningsutj\u00e4mning<\/li>\n<li>FastCGI-st\u00f6d med cachelagring<\/li>\n<li>WebSockets<\/li>\n<li>Hantering av statiska filer, indexfiler och automatisk indexering<\/li>\n<li><a href=\"https:\/\/kinsta.com\/se\/blog\/tls-vs-ssl\/\">TLS\/SSL<\/a> med SNI<\/li>\n<\/ul>\n<p>P\u00e5 Kinsta s\u00e5 kan <a href=\"https:\/\/kinsta.com\/se\/kinsta-tillagg\/?plan=visits-business1&#038;interval=month\">du kolla in Nginx och alla v\u00e5ra andra premiumtill\u00e4gg<\/a>.<\/p>\n<h2 id=\"nginx-vs-apache-stats\">Anv\u00e4ndningsstatistik f\u00f6r Nginx vs Apache<\/h2>\n<p><a href=\"https:\/\/kinsta.com\/se\/blog\/vad-ar-apache\/\" target=\"_blank\" rel=\"noopener noreferrer\">Apache<\/a> \u00e4r en annan popul\u00e4r webbserver med \u00f6ppen k\u00e4llkod. N\u00e4r det g\u00e4ller r\u00e5a siffror s\u00e5 \u00e4r Apache den mest popul\u00e4ra webbservern som finns och anv\u00e4nds av 43,6 % (nedg\u00e5ng fr\u00e5n 47 % \u00e5r 2018) av alla webbplatser med en k\u00e4nd webbserver, <a href=\"https:\/\/w3techs.com\/technologies\/cross\/web_server\/ranking\" target=\"_blank\" rel=\"noopener noreferrer\">enligt W3Techs<\/a>. Nginx kommer t\u00e4tt efter med 41,8 %.<\/p>\n<p>Netcraft genomf\u00f6rde en <a href=\"https:\/\/news.netcraft.com\/archives\/2019\/04\/22\/april-2019-web-server-survey.html\" target=\"_blank\" rel=\"noopener noreferrer\">unders\u00f6kning<\/a> p\u00e5 233 miljoner dom\u00e4ner och fann att Apache anv\u00e4nds till 31,54 % och Nginx till 26,20 %.<\/p>\n<figure id=\"attachment_44350\" aria-describedby=\"caption-attachment-44350\" style=\"width: 1462px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-44350 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2018\/03\/web-server-developers-market-share-domains.png\" alt=\"Webserverutvecklare: marknadsandelar av dom\u00e4ner (Bildk\u00e4lla: Netcraft)\" width=\"1462\" height=\"748\"><figcaption id=\"caption-attachment-44350\" class=\"wp-caption-text\">Webserverutvecklare: marknadsandelar av dom\u00e4ner (Bildk\u00e4lla: <a href=\"https:\/\/news.netcraft.com\/archives\/2019\/04\/22\/april-2019-web-server-survey.html\" target=\"_blank\" rel=\"noopener noreferrer\">Netcraft<\/a>)<\/figcaption><\/figure>\n<p>\u00c4ven om Apache \u00e4r det mest popul\u00e4ra alternativet totalt sett, s\u00e5 <strong>\u00e4r Nginx faktiskt den mest popul\u00e4ra webbservern bland webbplatser med h\u00f6g trafik<\/strong>.<\/p>\n<p>N\u00e4r man delar upp anv\u00e4ndningsgraden efter trafik s\u00e5 \u00e4r <strong>Nginx den st\u00f6rsta<\/strong>:<\/p>\n<ul>\n<li>60.9 % av de 100 000 mest popul\u00e4ra webbplatserna (upp fr\u00e5n 56,1 % \u00e5r 2018)<\/li>\n<li>67.1 % av de 10 000 mest popul\u00e4ra webbplatserna (j\u00e4mf\u00f6rt med 63,2 % \u00e5r 2018)<\/li>\n<li>62.1 % av de 1 000 mest popul\u00e4ra webbplatserna (upp fr\u00e5n 57 % \u00e5r 2018)<\/li>\n<\/ul>\n<p>Nginx anv\u00e4nds faktiskt av n\u00e5gra av de mest resurskr\u00e4vande webbplatserna, <a href=\"https:\/\/www.nginx.com\/blog\/why-netflix-chose-nginx-as-the-heart-of-its-cdn\/\" target=\"_blank\" rel=\"noopener noreferrer\">d\u00e4ribland Netflix<\/a>, NASA och till och med WordPress.com.<\/p>\n<p><strong>Apache&#8217;s anv\u00e4ndning<\/strong> r\u00f6r sig \u00e5 andra sidan i motsatt riktning. Den driver:<\/p>\n<ul>\n<li>24.0 % av de 100 000 mest popul\u00e4ra webbplatserna (fr\u00e5n 27,1 % \u00e5r 2018)<\/li>\n<li>18.8 % av de 10 000 mest popul\u00e4ra webbplatserna (ned fr\u00e5n 21,5 % \u00e5r 2018)<\/li>\n<li>16.6 % av de 1 000 mest popul\u00e4ra webbplatserna (upp fr\u00e5n 16,2 % \u00e5r 2018)<\/li>\n<\/ul>\n<p>Om vi tar en titt p\u00e5 <a href=\"https:\/\/trends.google.com\/trends\/explore?date=all&#038;q=nginx,apache\" target=\"_blank\" rel=\"noopener noreferrer\">Googles s\u00f6ktermer<\/a> sedan 2004 s\u00e5 kan vi se att Apache har minskat stadigt, medan NGINX har \u00f6kat n\u00e5got.<\/p>\n<figure id=\"attachment_21472\" aria-describedby=\"caption-attachment-21472\" style=\"width: 1996px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-21472 size-full\" title=\"NGINX vs Apache\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2018\/03\/search-terms-nginx-vs-apache-e1521229502606.png\" alt=\"NGINX vs Apache\" width=\"1996\" height=\"588\"><figcaption id=\"caption-attachment-21472\" class=\"wp-caption-text\">Nginx vs Apache<\/figcaption><\/figure>\n<p>\u00c5terigen, n\u00e4r man bet\u00e4nker att NGINX presterar b\u00e4ttre under skalning, s\u00e5 \u00e4r det inte f\u00f6rv\u00e5nande att webbplatser med h\u00f6g trafik v\u00e4ljer NGINX framf\u00f6r Apache. Kolla in v\u00e5r mer djupg\u00e5ende j\u00e4mf\u00f6relse mellan <a href=\"https:\/\/kinsta.com\/se\/blog\/nginx-vs-apache\/\">Nginx och Apache<\/a>.<\/p>\n<h2 id=\"check-running-nginx-apache\">S\u00e5 h\u00e4r kontrollerar du om du k\u00f6r Nginx eller Apache<\/h2>\n<p>P\u00e5 de flesta webbplatser s\u00e5 kan du helt enkelt kontrollera HTTP-sidhuvudet <code>server<\/code> f\u00f6r att se om det st\u00e5r Nginx eller Apache. Du kan se HTTP-sidhuvuden genom att starta fliken n\u00e4tverk i Chrome Devtools. Du kan \u00e4ven kontrollera sidhuvuden i ett verktyg som <a href=\"https:\/\/kinsta.com\/se\/blog\/pingdom-hastighetstestverktyg\/\" target=\"_blank\" rel=\"noopener noreferrer\">Pingdom<\/a> eller <a href=\"https:\/\/kinsta.com\/se\/blog\/gtmetrix-hastighetstest\/\" target=\"_blank\" rel=\"noopener noreferrer\">GTmetrix<\/a>.<\/p>\n<p>HTTP-sidhuvudet avsl\u00f6jar dock inte alltid den underliggande webbservern. Om din WordPress-webbplats exempelvis ligger bakom en proxytj\u00e4nst som Cloudflare s\u00e5 kommer det att st\u00e5 cloudflare i st\u00e4llet i HTTP-huvudet <code>server<\/code>.<\/p>\n<figure id=\"attachment_21478\" aria-describedby=\"caption-attachment-21478\" style=\"width: 1697px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-21478 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2018\/03\/nginx-http-header.png\" alt=\"Nginx HTTP-sidhuvud\" width=\"1697\" height=\"656\"><figcaption id=\"caption-attachment-21478\" class=\"wp-caption-text\">Nginx HTTP-sidhuvud<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Nginx, som uttalas &#8221;engine-ex&#8221;, \u00e4r en webbserver med \u00f6ppen k\u00e4llkod. Det har sedan den f\u00f6rsta framg\u00e5ngen som webbserver nu \u00e4ven b\u00f6rjat att anv\u00e4ndas som omv\u00e4nd proxy, &#8230;<\/p>\n","protected":false},"author":38,"featured_media":48718,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kinsta_gated_content":false,"_kinsta_gated_content_redirect":"","footnotes":""},"tags":[302,30],"topic":[799],"class_list":["post-47513","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","tag-nginx","tag-webhosting","topic-online-marknadsforing-tips"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.6 (Yoast SEO v24.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Vad \u00e4r Nginx? 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