- 2-4x faster than Bun.
- 10x faster than Node.
View source
import { open } from "jsr:@divy/[email protected]";
const db = open("/tmp/test.db");
const connection = db.connect();
const q = "select i, i as a from generate_series(1, 100000) s(i)";
const p = connection.prepare(q);
console.log("benchmarking query: " + q);
bench("duckdb", () => {
p.query();
});
await run({ percentiles: false });
connection.close();
db.close();# Deno canary
benchmarking query: select i, i as a from generate_series(1, 100000) s(i)
cpu: Apple M1
runtime: deno 1.24.0 (aarch64-apple-darwin)
benchmark time (avg) (min … max)
-------------------------------------------------
duckdb 4.66 ms/iter (4.26 ms … 7.47 ms)
# Bun
benchmarking query: select i, i as a from generate_series(1, 100000) s(i)
cpu: Apple M1
runtime: bun 0.1.4 (arm64-darwin)
benchmark time (avg) (min … max)
-------------------------------------------------
duckdb 8.69 ms/iter (6.26 ms … 11.4 ms)
View JIT benchmarks
const db = open(":memory:");
const connection = db.connect(db);
const q = "select i, i as a from generate_series(1, 100000) s(i)";
const p = connection.prepare(q);
console.log("benchmarking query: " + q);
group("query", () => {
bench("jit query()", () => p.query());
bench("query()", () => connection.query(q));
});
group("stream", () => {
bench("jit stream()", () => {
for (const x of p.stream()) x;
});
bench("stream()", () => {
for (const x of connection.stream(q)) x;
});
});# Deno canary
benchmarking query: select i, i as a from generate_series(1, 100000) s(i)
cpu: Apple M1
runtime: deno 1.24.0 (aarch64-apple-darwin)
benchmark time (avg) (min … max)
----------------------------------------------------
query
----------------------------------------------------
jit query() 4.79 ms/iter (4.31 ms … 12.06 ms)
query() 8.26 ms/iter (7.54 ms … 16.44 ms)
summary for query
jit query()
1.72x faster than query()
stream
----------------------------------------------------
jit stream() 9.96 ms/iter (9.84 ms … 10.18 ms)
stream() 10.97 ms/iter (10.82 ms … 11.35 ms)
summary for stream
jit stream()
1.1x faster than stream()
# Bun
benchmarking query: select i, i as a from generate_series(1, 100000) s(i)
cpu: Apple M1
runtime: bun 0.1.4 (arm64-darwin)
benchmark time (avg) (min … max)
----------------------------------------------------
query
----------------------------------------------------
jit query() 8.61 ms/iter (7.54 ms … 10.43 ms)
query() 18.5 ms/iter (17.16 ms … 20.34 ms)
summary for query
jit query()
2.15x faster than query()
stream
----------------------------------------------------
jit stream() 16.36 ms/iter (15.55 ms … 17.79 ms)
stream() 21.44 ms/iter (21.02 ms … 23.18 ms)
summary for stream
jit stream()
1.31x faster than stream()
import { open } from "https://deno.land/x/duckdb/mod.ts";
const db = open("./example.db");
// or const db = open(':memory:');
const connection = db.connect();
connection.query("select 1 as number"); // -> [{ number: 1 }]
for (const row of connection.stream("select 42 as number")) {
row; // -> { number: 42 }
}
const prepared = connection.prepare(
"select ?::INTEGER as number, ?::VARCHAR as text",
);
prepared.query(1337, "foo"); // -> [{ number: 1337, text: 'foo' }]
prepared.query(null, "bar"); // -> [{ number: null, text: 'bar' }]
connection.close();
db.close();Since we need the official DuckDB shared library and header file for building
the FFI bindings, some helper scripts are available to initialize everything and
compile our own library (in src/ directory) using the Clang LLVM compiler
tool.
./build-linux.sh...or alternatively:
deno task lib-linuxThis puts everything needed into directory bin/, so that we can use it for
telling the Deno runtime where to look when trying to find our shared library as
well as the one from DuckDB.
You can add the newly populated directory to the library search path, so that you won't get weird errors later:
export LD_LIBRARY_PATH=binThe best way to verify that your setup is working properly is to run the tests as follows:
deno task testIf you happen to see an error like this you did not adjust your library search
path with LD_LIBRARY_PATH:
./mod_test.ts (uncaught error)
error: (in promise) Error: Could not open library: Could not open library: libduckdb-deno.so: cannot open shared object file: No such file or directory
const { symbols: duck } = Deno.dlopen(get_lib(), {
^
at new DynamicLibrary (ext:deno_ffi/00_ffi.js:454:42)
at Object.dlopen (ext:deno_ffi/00_ffi.js:558:10)
at file:///home/ancoron/dev/duckdb-deno/lib.js:39:32
Thanks to the original author of @evan/duckdb
@evanwashere for most of the implementation
that has been reused in this module.
Modifications by Ancoron are licensed under Apache-2.0.
Modifications by Divy are licensed under MIT.
Original work by Evan is licensed under Apache-2.0.
SPDX-License-Identifier: Apache-2.0 AND MIT
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent