Vectormike

const http = require('http');
const fs = require('fs')
const axios = require('axios')

const server = http.createServer((_, res) => {
	axios.get('https://api.thecatapi.com/v1/images/search?breed_id=beng')
	.then(data => console.log(data.data[0].breeds))
	res.end('Hello there')
})

Vectormike

const http = require('http');
const fs = require('fs')

const server = http.createServer((_, res) => {
	console.log(fs.readFileSync('./package.json'));
	res.end('Hello there')
})

server.listen(5000)

Vectormike

const http = require('http');
const fs = require('fs')

const server = http.createServer((_, res) => {
	fs.readFile('./package.json', console.log)
	res.end('Hello there')
})

server.listen(5000)

Vectormike

const http = require('http');

const server = http.createServer((_, res) => res.end('Hello there'));

server.listen(5000);

console.log('Server running');

Vectormike

const OS = require('os')
process.env.UV_THREADPOOL_SIZE = OS.cpus().length

Vectormike

indexing=# explain analyze select name from students where name = 'Victor';
                                            QUERY PLAN                                             
---------------------------------------------------------------------------------------------------
 Seq Scan on students  (cost=0.00..1.30 rows=1 width=32) (actual time=0.010..0.011 rows=2 loops=1)
   Filter: (name = 'Victor'::text)
   Rows Removed by Filter: 22
 Planning Time: 0.040 ms
 Execution Time: 0.019 ms
(5 rows)

Vectormike

indexing=# create index student_name on students(name);
CREATE INDEX

Vectormike

indexing=# explain analyze select name from students where name = 'Victor';
                                             QUERY PLAN                                             
----------------------------------------------------------------------------------------------------
 Seq Scan on students  (cost=0.00..20.12 rows=4 width=32) (actual time=1.677..1.715 rows=2 loops=1)
   Filter: (name = 'Victor'::text)
   Rows Removed by Filter: 22
 Planning Time: 15.170 ms
 Execution Time: 10.083 ms
(5 rows)

Vectormike

indexing=# explain analyze select name from students where id = 20;
                                             QUERY PLAN                                             
----------------------------------------------------------------------------------------------------
 Seq Scan on students  (cost=0.00..20.12 rows=4 width=32) (actual time=0.068..0.070 rows=1 loops=1)
   Filter: (id = 20)
   Rows Removed by Filter: 23
 Planning Time: 0.209 ms
 Execution Time: 0.151 ms
(5 rows)

Vectormike

indexing=# explain analyze select id from students where id = 20;
                                            QUERY PLAN                                             
---------------------------------------------------------------------------------------------------
 Seq Scan on students  (cost=0.00..20.12 rows=4 width=8) (actual time=0.009..0.010 rows=1 loops=1)
   Filter: (id = 20)
   Rows Removed by Filter: 23
 Planning Time: 0.033 ms
 Execution Time: 0.020 ms
(5 rows)