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Browser","/blog/nuxtjs-from-terminal-to-browser","blog/9.nuxtjs-from-terminal-to-browser",{"id":1108,"title":1044,"authors":1109,"body":1116,"category":1635,"date":1636,"description":1637,"draft":108,"extension":1638,"image":1639,"meta":1640,"navigation":1501,"path":1045,"seo":1641,"stem":1046,"tags":6,"__hash__":1642},"blog/blog/14.nuxt-on-the-edge.md",[1110],{"name":1111,"avatar":1112,"to":1114,"twitter":1115},"Sébastien Chopin",{"src":1113},"https://github.com/atinux.png","https://x.com/atinux","atinux",{"type":1117,"value":1118,"toc":1629},"minimal",[1119,1123,1141,1144,1152,1161,1176,1180,1183,1198,1201,1204,1210,1216,1219,1251,1260,1265,1268,1307,1319,1323,1330,1341,1430,1433,1541,1552,1558,1589,1603,1607,1610,1625],[1120,1121,19],"h2",{"id":1122},"introduction",[1124,1125,1126,1127,1134,1135,1140],"p",{},"In September 2017, Cloudflare ",[1128,1129,1133],"a",{"href":1130,"rel":1131},"https://blog.cloudflare.com/introducing-cloudflare-workers/",[1132],"nofollow","introduced Cloudflare Workers",", giving the ability to run JavaScript on their ",[1128,1136,1139],{"href":1137,"rel":1138},"https://www.cloudflare.com/network/",[1132],"edge network",". This means your code will deploy on the entire edge network in over a hundred locations worldwide in about 30 seconds. This technology allows you to focus on writing your application close to your users, wherever they are in the world (~50ms latency).",[1124,1142,1143],{},"The worker's runtime is not the same as Node.js or the Browser, it executes the code using V8, the JavaScript engine developed by Google Chrome. Until now, what you could run on their platform were small scripts running on the edge before hitting your server to increase the performance or add some logic based on request headers, for example.",[1124,1145,1146,1147,1151],{},"In November 2020, while working on Nuxt 3, ",[1148,1149,1150],"strong",{},"we made the bet to run Nuxt in-production on edge runtimes / V8 isolates",".",[1124,1153,1154,1155,1160],{},"It unlocks the ability to server-render pages in ~50ms from all over the world when using a platform like CloudFlare Workers, without having to deal with servers, load balancers and caching, for about ",[1128,1156,1159],{"href":1157,"rel":1158},"https://developers.cloudflare.com/workers/platform/pricing/",[1132],"$0.3 per million requests",". As of today, new platforms are coming to let run apps on V8 isolates such as Deno Deploy.",[1162,1163,1164],"info",{},[1124,1165,1166,1169,1170,1175],{},[1148,1167,1168],{},"2024 update:"," I released ",[1128,1171,1174],{"href":1172,"rel":1173},"https://hub.nuxt.com",[1132],"NuxtHub"," to let you build full-stack applications with Nuxt on the edge, on your Cloudflare account with zero configuration. It includes a database, blob storage, KV, remote storage and more.",[1120,1177,1179],{"id":1178},"the-challenge","The Challenge",[1124,1181,1182],{},"In order to make Nuxt run in workers, we had to rewrite some parts of Nuxt to be environmentally agnostic (runs in Node.js, Browser or V8).",[1124,1184,1185,1186,1191,1192,1197],{},"We started with our server and created ",[1128,1187,1190],{"href":1188,"rel":1189},"http://github.com/unjs/h3",[1132],"unjs/h3",": a minimal http framework built for high performance and portability. It replaces ",[1128,1193,1196],{"href":1194,"rel":1195},"https://github.com/senchalabs/connect",[1132],"Connect"," we used in Nuxt 2 but has compatibility with it so you can keep using Connect/Express middleware. In the workers, for each incoming request, it starts Nuxt in production, sends the request to it and sends back the response.",[1124,1199,1200],{},"In Nuxt 2, the duration to start the server in production in memory (also named cold start) was about ~300ms, because we had to load all the dependencies of your server and application in order to handle the request.",[1124,1202,1203],{},"By working on h3, we decided to code-split each handler attached to the server and lazy-load them only when requested. When you start Nuxt 3, we only load h3 in memory and the corresponding handlers. When a request comes in, we load the handler corresponding to the route and execute it.",[1205,1206],"video",{":controls":1207,"poster":1208,"src":1209},"true","https://res.cloudinary.com/nuxt/video/upload/v1689236511/nuxt3/nuxt3-server-performance.jpg","https://res.cloudinary.com/nuxt/video/upload/v1689236511/nuxt3/nuxt3-server-performance.mp4",[1124,1211,1212,1213,1151],{},"By adopting this approach, ",[1148,1214,1215],{},"we reduced the cold start from ~300ms to ~2ms",[1124,1217,1218],{},"We had another challenge in order to run Nuxt on the edge: the production bundle size. This includes the server, Vue app and Node.js dependencies combined. Cloudflare workers currently have a limit of 1MB (free plan) and 5MB ($5 per month plan) for the worker size.",[1124,1220,1221,1222,1227,1228,1232,1233,1238,1239,1244,1245,1247,1248],{},"In order to achieve this, we created ",[1128,1223,1226],{"href":1224,"rel":1225},"https://nitro.unjs.io/",[1132],"unjs/nitro",", our server engine, when running the ",[1229,1230,1231],"code",{},"nuxt build"," command, it bundles your whole project and includes all dependencies into the final output. It uses ",[1128,1234,1237],{"href":1235,"rel":1236},"https://rollupjs.org/",[1132],"Rollup"," and ",[1128,1240,1243],{"href":1241,"rel":1242},"https://github.com/vercel/nft",[1132],"vercel/nft"," to trace only the code used by the ",[1229,1246,203],{}," to remove unnecessary code. ",[1148,1249,1250],{},"The total size of the generated output for a basic Nuxt 3 application is about 700kB gzip.",[1124,1252,1253,1254,1259],{},"Lastly, to provide the same developer experience between development (Node.js) and production on Cloudflare (Edge runtime), we created ",[1128,1255,1258],{"href":1256,"rel":1257},"https://github.com/unjs/unenv",[1132],"unjs/unenv",": a library to convert JavaScript code to run everywhere (platform agnostic) by mocking or adding polyfills for known dependencies.",[1124,1261,1262],{},[1148,1263,1264],{},"At Nuxt, we believe that you should have the freedom to choose the hosting provider that fits you best.",[1124,1266,1267],{},"This is why you can deploy a Nuxt application with edge-side rendering on:",[1269,1270,1271,1277,1284,1291,1299],"ul",{},[1272,1273,1274],"li",{},[1128,1275,1174],{"href":1172,"rel":1276},[1132],[1272,1278,1279],{},[1128,1280,1283],{"href":1281,"rel":1282},"https://nitro.unjs.io/deploy/providers/cloudflare#cloudflare-pages",[1132],"Cloudflare Page",[1272,1285,1286],{},[1128,1287,1290],{"href":1288,"rel":1289},"https://nitro.unjs.io/deploy/providers/deno-deploy",[1132],"Deno Deploy",[1272,1292,1293,1298],{},[1128,1294,1297],{"href":1295,"rel":1296},"https://nitro.unjs.io/deploy/providers/vercel#vercel-edge-functions",[1132],"Vercel Edge Functions"," (using CloudFlare Workers under the hood)",[1272,1300,1301,1306],{},[1128,1302,1305],{"href":1303,"rel":1304},"https://nitro.unjs.io/deploy/providers/netlify#netlify-edge-functions",[1132],"Netlify Edge Functions"," (using Deno under the hood)",[1124,1308,1309,1310,1314,1315,1151],{},"We also support many other deployment providers, including ",[1128,1311,1313],{"href":1312},"/docs/getting-started/deployment#static-hosting","static hosting"," or ",[1128,1316,1318],{"href":1317},"/docs/getting-started/deployment#nodejs-server","traditional Node.js serverless and server hosts",[1120,1320,1322],{"id":1321},"pushing-full-stack-capabilities","Pushing Full-stack Capabilities",[1124,1324,1325,1326,1329],{},"Now that we have Nuxt running on edge runtime, we can do more than render a Vue application. 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routes.",[1124,1559,1560,1561,1566,1567,1572,1573,1572,1578,1572,1583,1588],{},"Furthermore, by leveraging Object Relational Mapping (ORM) like ",[1128,1562,1565],{"href":1563,"rel":1564},"https://orm.drizzle.team/",[1132],"drizzle-orm",", developers can connect Edge & Serverless databases such as ",[1128,1568,1571],{"href":1569,"rel":1570},"https://developers.cloudflare.com/d1/",[1132],"D1",", ",[1128,1574,1577],{"href":1575,"rel":1576},"https://turso.tech/",[1132],"Turso",[1128,1579,1582],{"href":1580,"rel":1581},"https://neon.tech",[1132],"Neon",[1128,1584,1587],{"href":1585,"rel":1586},"https://planetscale.com/",[1132],"Planetscale"," and more.",[1124,1590,1591,1592,1597,1598,1151],{},"I created ",[1128,1593,1596],{"href":1594,"rel":1595},"https://todos.nuxt.dev/",[1132],"Atidone",", an open source demo to showcase a full-stack application with authentication and a database running on the edge. The source code is available on GitHub under the MIT license at ",[1128,1599,1602],{"href":1600,"rel":1601},"https://github.com/atinux/atidone",[1132],"atinux/atidone",[1120,1604,1606],{"id":1605},"conclusion","Conclusion",[1124,1608,1609],{},"We are excited about edge-side rendering and what it unlocks. 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