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README.md
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README.md
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# pglue
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## Performance
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pglue implements automatic query pipelining which makes it especially performant with many queries concurrently executed on a single connection.
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## Benchmarks
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Performance is generally on par with [postgres.js][1] and up to **4x faster** than [deno-postgres][2]. Keep in mind that database driver benchmarks are largely dependent on the database performance itself and does not necessarily represent accurate real-world performance.
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Tested on a 4 core 2800 MHz x86_64-pc-linux-gnu QEMU VM with Deno 2.1.4 and local PostgreSQL 17.1 installation connected via TCP on localhost:
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```
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CPU | Common KVM Processor v2.0
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Runtime | Deno 2.1.4 (x86_64-unknown-linux-gnu)
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benchmark time/iter (avg) iter/s (min … max) p75 p99 p995
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--------------- ----------------------------- --------------------- --------------------------
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group select n=1
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pglue 9.9 ms 101.1 ( 7.9 ms … 17.8 ms) 10.2 ms 17.8 ms 17.8 ms
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postgres.js 8.8 ms 114.2 ( 7.0 ms … 9.5 ms) 9.1 ms 9.5 ms 9.5 ms
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deno-postgres 37.4 ms 26.7 ( 25.3 ms … 42.8 ms) 39.2 ms 42.8 ms 42.8 ms
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summary
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pglue
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1.13x slower than postgres.js
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3.78x faster than deno-postgres
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group select n=5
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pglue 48.2 ms 20.8 ( 41.9 ms … 68.5 ms) 50.3 ms 68.5 ms 68.5 ms
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postgres.js 43.6 ms 22.9 ( 38.1 ms … 57.3 ms) 48.6 ms 57.3 ms 57.3 ms
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deno-postgres 186.5 ms 5.4 (138.4 ms … 213.2 ms) 193.6 ms 213.2 ms 213.2 ms
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summary
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pglue
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1.11x slower than postgres.js
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3.87x faster than deno-postgres
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group select n=10
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pglue 97.8 ms 10.2 ( 90.2 ms … 105.0 ms) 104.0 ms 105.0 ms 105.0 ms
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postgres.js 93.8 ms 10.7 ( 80.9 ms … 107.7 ms) 106.1 ms 107.7 ms 107.7 ms
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deno-postgres 333.9 ms 3.0 (205.6 ms … 394.9 ms) 377.4 ms 394.9 ms 394.9 ms
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summary
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pglue
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1.04x slower than postgres.js
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3.42x faster than deno-postgres
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group insert n=1
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pglue 237.5 µs 4,210 (143.9 µs … 1.3 ms) 249.2 µs 953.3 µs 1.3 ms
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postgres.js 242.5 µs 4,124 (137.4 µs … 886.4 µs) 263.4 µs 762.8 µs 865.5 µs
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deno-postgres 295.1 µs 3,389 (163.8 µs … 899.3 µs) 340.0 µs 641.7 µs 899.3 µs
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summary
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pglue
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1.02x faster than postgres.js
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1.24x faster than deno-postgres
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group insert n=10
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pglue 1.1 ms 869.6 (610.1 µs … 2.1 ms) 1.2 ms 2.0 ms 2.1 ms
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postgres.js 755.9 µs 1,323 (387.6 µs … 4.7 ms) 805.4 µs 2.8 ms 4.7 ms
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deno-postgres 2.3 ms 434.4 ( 1.6 ms … 10.6 ms) 2.4 ms 6.5 ms 10.6 ms
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summary
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pglue
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1.52x slower than postgres.js
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2.00x faster than deno-postgres
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group insert n=100
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pglue 9.2 ms 109.0 ( 5.5 ms … 15.6 ms) 10.4 ms 15.6 ms 15.6 ms
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postgres.js 14.8 ms 67.4 ( 9.6 ms … 35.8 ms) 16.6 ms 35.8 ms 35.8 ms
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deno-postgres 18.8 ms 53.1 ( 14.5 ms … 25.8 ms) 20.9 ms 25.8 ms 25.8 ms
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summary
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pglue
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1.62x faster than postgres.js
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2.05x faster than deno-postgres
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group insert n=200
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pglue 15.0 ms 66.6 ( 11.1 ms … 19.0 ms) 16.7 ms 19.0 ms 19.0 ms
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postgres.js 28.1 ms 35.6 ( 22.8 ms … 40.0 ms) 29.1 ms 40.0 ms 40.0 ms
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deno-postgres 35.9 ms 27.9 ( 29.7 ms … 46.5 ms) 37.2 ms 46.5 ms 46.5 ms
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summary
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pglue
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1.87x faster than postgres.js
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2.39x faster than deno-postgres
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```
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[1]: https://github.com/porsager/postgres
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[2]: https://github.com/denodrivers/postgres
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114
bench.ts
114
bench.ts
@ -49,54 +49,84 @@ async function bench_insert(
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b.end();
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}
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for (const n of [1, 2, 5, 10]) {
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Deno.bench(`pglue (select, n=${n})`, async (b) => {
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await bench_select(b, n, () => c_pglue.query`select * from pg_type`);
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for (const n of [1, 5, 10]) {
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Deno.bench({
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name: `pglue`,
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group: `select n=${n}`,
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baseline: true,
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async fn(b) {
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await bench_select(b, n, () => c_pglue.query`select * from pg_type`);
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},
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});
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Deno.bench(`postgres.js (select, n=${n})`, async (b) => {
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await bench_select(b, n, () => c_pgjs`select * from pg_type`);
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Deno.bench({
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name: `postgres.js`,
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group: `select n=${n}`,
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async fn(b) {
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await bench_select(b, n, () => c_pgjs`select * from pg_type`);
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},
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});
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Deno.bench(`deno-postgres (select, n=${n})`, async (b) => {
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await bench_select(b, n, () => c_denopg.queryArray`select * from pg_type`);
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});
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}
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for (const n of [1, 2, 5, 10, 50, 100, 200]) {
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Deno.bench(`pglue (insert, n=${n})`, async (b) => {
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await using _tx = await c_pglue.begin();
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await c_pglue.query`create table my_table (a text not null, b boolean not null, c integer not null)`;
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await bench_insert(b, n, (a, b, c) =>
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c_pglue.query`insert into my_table (a, b, c) values (${a}, ${b}, ${c})`.execute()
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);
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});
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Deno.bench(`postgres.js (insert, n=${n})`, async (b) => {
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await c_pgjs`begin`;
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try {
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await c_pgjs`create table my_table (a text not null, b boolean not null, c integer not null)`;
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await bench_insert(b, n, (a, b, c) =>
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c_pgjs`insert into my_table (a, b, c) values (${a}, ${b}, ${c})`.execute()
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);
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} finally {
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await c_pgjs`rollback`;
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}
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});
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Deno.bench(`deno-postgres (insert, n=${n})`, async (b) => {
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const tx = c_denopg.createTransaction(`my_tx`);
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await tx.begin();
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try {
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await tx.queryArray`create table my_table (a text not null, b boolean not null, c integer not null)`;
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await bench_insert(
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Deno.bench({
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name: `deno-postgres`,
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group: `select n=${n}`,
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async fn(b) {
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await bench_select(
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b,
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n,
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(a, b, c) =>
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tx.queryArray`insert into my_table (a, b, c) values (${a}, ${b}, ${c})`
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() => c_denopg.queryArray`select * from pg_type`
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);
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} finally {
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await tx.rollback();
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}
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},
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});
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}
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for (const n of [1, 10, 100, 200]) {
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Deno.bench({
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name: `pglue`,
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group: `insert n=${n}`,
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baseline: true,
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async fn(b) {
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await using _tx = await c_pglue.begin();
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await c_pglue.query`create table my_table (a text not null, b boolean not null, c integer not null)`;
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await bench_insert(b, n, (a, b, c) =>
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c_pglue.query`insert into my_table (a, b, c) values (${a}, ${b}, ${c})`.execute()
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);
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},
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});
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Deno.bench({
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name: `postgres.js`,
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group: `insert n=${n}`,
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async fn(b) {
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await c_pgjs`begin`;
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try {
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await c_pgjs`create table my_table (a text not null, b boolean not null, c integer not null)`;
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await bench_insert(b, n, (a, b, c) =>
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c_pgjs`insert into my_table (a, b, c) values (${a}, ${b}, ${c})`.execute()
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);
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} finally {
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await c_pgjs`rollback`;
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}
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},
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});
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Deno.bench({
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name: `deno-postgres`,
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group: `insert n=${n}`,
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async fn(b) {
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const tx = c_denopg.createTransaction(`my_tx`);
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await tx.begin();
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try {
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await tx.queryArray`create table my_table (a text not null, b boolean not null, c integer not null)`;
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await bench_insert(
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b,
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n,
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(a, b, c) =>
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tx.queryArray`insert into my_table (a, b, c) values (${a}, ${b}, ${c})`
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);
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} finally {
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await tx.rollback();
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}
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},
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});
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}
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