fabiolimace

#!/usr/bin/bash
#
# Records the oudio from your browser and other applications.
#
# USAGE:
#
#     record-system-output-audio.sh DURATION
#
# Where DURATION is [<HH>:]<MM>:<SS> or <SS>[s] (read ffmpeg-utils manual)
#

fabiolimace

CREATE SEQUENCE public.global_id_seq;
ALTER SEQUENCE public.global_id_seq OWNER TO postgres;

CREATE OR REPLACE FUNCTION public.id_generator()
    RETURNS bigint
    LANGUAGE 'plpgsql'
AS $BODY$
DECLARE
    our_epoch bigint := 1314220021721;
    seq_id bigint;

fabiolimace

#!/usr/bin/bash
#
# Removes a block to /etc/hosts.
#
# USAGE:
#
#     $ block-site-add.sh EXAMPLE.COM
#     0.0.0.0 example.com
#     0.0.0.0 www.example.com
#

fabiolimace

// Before
@Id
@Column(name = "entity_id")
@GeneratedValue(generator = "system-uuid")
@GenericGenerator(name = "system-uuid", strategy = "uuid2")
private String entityId;

// After
@Id
@Column(name = "entity_id")

fabiolimace

package com.example.idapi;

import java.util.Objects;

import com.github.f4b6a3.ulid.Ulid;
import com.github.f4b6a3.ulid.UlidCreator;

public abstract class Id<T extends Id<T>> implements Comparable<T> {

	protected final Ulid value;

fabiolimace

	private static class Lazy<T> {

		private T object = null;
		private Supplier<T> supplier;

		private static final ReentrantLock lock = new ReentrantLock();

		public Lazy(Supplier<T> supplier) {
			this.supplier = supplier;
		}

fabiolimace

-- UUIDv7 canonical format: AAAAAAAA-BBBB-7CCC-DDDD-EEEEEEEEEEEE
select printf('%08x', ((strftime('%s') * 1000) >> 16)) || '-' ||
       printf('%04x', ((strftime('%s') * 1000) + ((strftime('%f') * 1000) % 1000)) & 0xffff) || '-' ||
       printf('%04x', 0x7000 + abs(random()) % 0x0fff) || '-' ||
       printf('%04x', 0x8000 + abs(random()) % 0x3fff) || '-' ||
       printf('%012x', abs(random()) >> 16);

fabiolimace

#!/bin/bash

INIT_TABLE_ROWS=20000000
PGBENCH_TRANSACTIONS_PER_CLIENT=100000
PGBENCH_CLIENTS=10

run_test() {
  echo "$(date +%y%m%d.%H%M) STARTING TEST $1"

  pg_stop

fabiolimace

#!/bin/bash
# 
# Append notes to today's text file in the notes folder.
#
# Usage:
# 
#     $ notes # append to today's file
#     this is a note
#     [CTRL+D]
#

fabiolimace

import org.junit.Test;

import java.lang.ref.WeakReference;

import static org.junit.Assert.assertNull;

public class ThreadLocalWeakRefTest {
  /**
   * Many Java web servers and containers go out of their way to find and null
   * out ThreadLocals that an application might have created. Question is, is