jasonsalas

/*
    Sports player profiles in Rust 1.73.0
    --------------------------------------
    This code demo highlights how to:
    - implement the fmt::Display trait for enums (Line 21)
    - develop a helper method to capitalize the first letter of words (Line 56)
    - apply turbofish type casting (Line 60)
*/
use std::fmt;

jasonsalas

Running Chapter 6's pub/sub demo using Kafka

Here's how to setup Kafka as a pub/sub engine for Alexander Shuiskov's excellent Microservices with Go, and how to create a producer and consumer for your instance in a CLI

running Docker Compose

• create a Docker Compose YAML file in cmd/ratingingester

run Kafka in a Docker container (from movieapp/src/cmd/ratingingester):

• docker-compose -d up
• docker exec -it kafka /bin/sh

jasonsalas

package api

import "math/rand"

// QuickSort is a divide-&-conquer algorithm running in O(n log n) time that receives an integer slice
// and returns a sorted slice of integers (h/t: https://gist.github.com/vderyagin/4161347)
func QuickSort(numbers []int) []int {
	length := len(numbers)

	/* BASE CASE */

jasonsalas

// simple sorting algorithms
package main

import "fmt"

func getNumbers() []int {
	return []int{12, 7, 256, 4, 22, 44, 55, 85, 56, 3, 6, 1, 98, 76}
}

func RangeLoopSort(arr []int) []int {

jasonsalas

package transaction

import (
	"log"
	"math/rand"
	"time"

	"github.com/golang/protobuf/ptypes"
	bank "github.com/jasonsalas/protobank/pkg/protobuf/bank"
	"google.golang.org/grpc/codes"

jasonsalas

package transaction

import (
	"context"
	"io"
	"log"

	bank "github.com/jasonsalas/protobank/pkg/protobuf/bank"
	"google.golang.org/grpc"
)

jasonsalas

syntax = "proto3";

package bank;

option go_package = "github.com/jasonsalas/protobank";

import "google/protobuf/timestamp.proto";

message Transaction {
    enum Operation {

jasonsalas

package main

import (
	"context"
	"fmt"
	"log"

	"github.com/jasonsalas/protobank/internal/transaction"
	"google.golang.org/grpc"
)

jasonsalas

package main

import (
	"fmt"
	"log"
	"net"

	"github.com/jasonsalas/protobank/internal/transaction"
	bank "github.com/jasonsalas/protobank/pkg/protobuf/bank"
	"google.golang.org/grpc"

jasonsalas

/* using worker pools & buffered channels in Go */
// h/t: Naveen Ramanathan @ golangbot.com
// https://golangbot.com/buffered-channels-worker-pools/

package main

import (
	"fmt"
	"math/rand"
	"sync"