djkazic

The unofficial RennTech Empyrion server guide to success

Table of contents

1. Foreword
2. Leaving the escape pod
3. Acquiring basic resources

Foreword

• If you have not yet played the tutorial, please do so. It takes about an hour, but it's well worth the effort, as it gives you basic survival skills. This guide will assume you've completed it.

djkazic

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I hereby claim:

• I am djkazic on github.
• I am synthlock (https://keybase.io/synthlock) on keybase.
• I have a public key ASDrlbGcmHJnUqChG3NSgpHhorKPjey_HCSIv8SYhy_qlQo

To claim this, I am signing this object:

djkazic

#!/bin/bash
# Allows you to use a [tank] and [reserve] pool
# Set vars for best results

if [ "$#" != 4 ]; then
    echo "    Usage: ./defrag <src-pool> <src-dataset> <dest-pool> <grub-disk>"
    echo ''
    echo "    Example: ./defrag tank os reserve /dev/sda"
    exit 1
fi

djkazic

Keybase proof

I hereby claim:

• I am djkazic on github.
• I am kevin_lightning (https://keybase.io/kevin_lightning) on keybase.
• I have a public key ASBDAdIIp44kp3xvKVQtvu2uOOr8rlWMKtLehEV7Xr-H3go

To claim this, I am signing this object:

djkazic

postgres_kvdb tuning guide for LND

Introduction

Today, LND supports using several database backends with the default being bbolt.

Postgres represents a more battle-tested deployment of a DB and comes with some features of interest that benefit performance and data durability:

• Async / sync replication
• Vacuum for dead tuples cleanup
• (with SQL schema) optimizations around index use

djkazic

package main

import (
	"crypto/sha256"
	"encoding/binary"
	"encoding/hex"
	"fmt"
	"math/big"
	"sort"
)

djkazic

import secrets

# secp256k1 parameters
p = 2**256 - 2**32 - 977
a = 0
b = 7

def random_256bit_int():
    # random 32-byte string interpreted as big-endian integer
    return int.from_bytes(secrets.token_bytes(32), "big")

djkazic

import secrets
from statistics import mean

# secp256k1 parameters
p = 2**256 - 2**32 - 977
b = 7  # y^2 = x^3 + 7

def is_quadratic_residue(n):
    """Return True if n is a quadratic residue mod p (including 0)."""
    if n == 0:

djkazic

#!/usr/bin/env python3
import sys
import secrets
from statistics import mean

p = 2**256 - 2**32 - 977
b = 7  # y^2 = x^3 + 7

def is_quadratic_residue(n):
    return n == 0 or pow(n, (p - 1) // 2, p) == 1

djkazic

#!/usr/bin/env python3
import requests
import json
from base64 import b64encode

RPC_USER = "bitcoin"
RPC_PASSWORD = "bitcoin"
RPC_HOST = "127.0.0.1"
RPC_PORT = 8332