TypeError: value too large (max 65536 bytes)

圧縮することでデータが10分の1ほどになります。保存できないときにお試しください

import { serve } from "https://deno.land/std@0.177.0/http/server.ts";
import { deflate, inflate } from "https://deno.land/x/compress@v0.4.4/mod.ts";

const kv = await Deno.openKv();
kv.getText = (...args) => kv.get(...args).then(e => ({...e, value: new TextDecoder().decode(inflate(e.value))}))
kv.setText = (key, value) => kv.set(key, deflate(new TextEncoder().encode(value)))
kv.listText = async (...args) => {
    const entries = []
    for await (const e of kv.list(...args)) entries.push({...e, value: new TextDecoder().decode(inflate(e.value))})
    return entries
}

serve(async (req: Request) => {
    const html = await fetch("https://example.com/").then(r => r.text())
    await kv.setText(["mykey"], html)
    console.log(await kv.getText(["mykey"]))
    console.log(await kv.listText({prefix: []}))
    return new Response("Hello World")
});

deflateではなく、gzipを使う場合

gzipは、deflateより12バイト多くなります

import { serve } from "https://deno.land/std@0.177.0/http/server.ts";
import { gzip, gunzip } from "https://deno.land/x/compress@v0.4.4/mod.ts";

const kv = await Deno.openKv();
kv.getText = (...args) => kv.get(...args).then(e => ({...e, value: new TextDecoder().decode(gunzip(e.value))}))
kv.setText = (key, value) => kv.set(key, gzip(new TextEncoder().encode(value)))
kv.listText = async (...args) => {
    const entries = []
    for await (const e of kv.list(...args)) entries.push({...e, value: new TextDecoder().decode(gunzip(e.value))})
    return entries
}

serve(async (req: Request) => {
    const html = await fetch("https://example.com/").then(r => r.text())
    await kv.setText(["mykey"], html)
    console.log(await kv.getText(["mykey"]))
    console.log(await kv.listText({prefix: []}))
    return new Response("Hello World")
});