Docker single executable / memory consumption

[predaytor]

Is it possible to reduce memory consumption with Fresh 2.0? Currently deployed on fly.io on a 1024MB machine, while a similar application on Node.js consumes around 190-220MB of RAM. Maybe we can create a single executable and get rid of typescript transpilation at runtime? Very thanks.

FROM denoland/deno:debian

WORKDIR /app

COPY . .

RUN deno task build

EXPOSE 80

CMD ["run", "-A", "main.ts"]

[predaytor]

Will this be possible with the release of Deno 2.1.0?

denoland/deno#26939

To include files or directories in the executable, specify them via the --include <path> flag.

deno compile --include names.csv --include data main.ts

Then read the file relative to the directory path of the current module via import.meta.dirname:

// main.ts
const names = Deno.readTextFileSync(import.meta.dirname + "/names.csv");
const dataFiles = Deno.readDirSync(import.meta.dirname + "/data");

// use names and dataFiles here

Note this currently only works for files on the file system and not remote
files.

[janjangao]

@predaytor hi, I think since Deno 2.1.3, --include <path> shall work correctly with deno compile

You can compile the fresh app with single executable file then copy and run in a low memory environment. Can take reference of my Dockerfile
https://github.com/janjangao/hayond.site/blob/main/Dockerfile

[janjangao]

You can compile the fresh app with single executable file then copy and run in a low memory environment.

But there is an other issue, I can see a simple fresh app with 50M at initial state, but the memory increase little by little when day goes by, maybe there's potential memory leak problem.

[predaytor]

@janjangao interesting. for some reason I am getting "Not Found" for my routes. The directly described API endpoints (GET/POST) are working properly:

upd: it's a canary version

import { App, fsRoutes, staticFiles, trailingSlashes } from 'fresh';
import { satoriApi } from '~/api/satori.tsx';
import { subscribeApi } from '~/api/subscribe.ts';
import { cors } from '~/middleware/cors.ts';
import { secureHeaders } from '~/middleware/security-headers.ts';

export const app = new App<State>({ root: import.meta.url });

app.use(staticFiles());
app.use(trailingSlashes('never'));
app.use(cors);
app.use(secureHeaders);

app.post('/api/subscribe', subscribeApi);
app.get('/api/satori', satoriApi);

await fsRoutes(app, {
    dir: './',
    loadIsland: (path) => import(`./islands/${path}`),
    loadRoute: (path) => import(`./routes/${path}`),
});

if (import.meta.main) {
    await app.listen();
}

[predaytor]

on Canary it's about ~370 MB of memory consumption, in addition to static files and routes not working.

[janjangao]

for some reason I am getting "Not Found" for my routes.

oh, I didn't write complex logic like this, maybe let me proceed try my webside to see if have same issue.

[janjangao]

upd: it's a canary version

also, let me try the canary version later