⚡️ add readme

Author: yuanyu90221

README.md

@@ -2,3 +2,111 @@
 
 This repository is demo how to use asyncq with handle complex job
 
+## setup task on producer
+
+```golang
+package main
+
+import (
+	"log"
+	"time"
+
+	"github.com/hibiken/asynq"
+	"github.com/leetcode-golang-classroom/golang-sample-with-asyncq/internal/config"
+	"github.com/leetcode-golang-classroom/golang-sample-with-asyncq/internal/tasks"
+)
+
+func main() {
+	redisClientOpt, err := asynq.ParseRedisURI(config.AppConfig.RedisURL)
+	if err != nil {
+		log.Fatalf("failed to parse redis url: %v", err)
+	}
+	client := asynq.NewClient(redisClientOpt)
+	defer client.Close()
+
+	task, err := tasks.NewEmailTask("[email protected]", "Welcome!", "Thank you for signing up.")
+	if err != nil {
+		log.Fatalf("could not create task: %v\n", err)
+	}
+
+	info, err := client.Enqueue(task)
+	if err != nil {
+		log.Fatalf("could not enqueue task: %v", err)
+	}
+	log.Printf("enqueued task: id=%s queue=%s\n", info.ID, info.Queue)
+
+	task, err = tasks.NewReportTask(10)
+	if err != nil {
+		log.Fatalf("could not create task: %v\n", err)
+	}
+	info, err = client.Enqueue(task, asynq.MaxRetry(10), asynq.Timeout(3*time.Minute))
+	if err != nil {
+		log.Fatalf("could not enqueue task: %v\n", err)
+	}
+	log.Printf("enqueued task: id=%s queue=%s\n", info.ID, info.Queue)
+
+	task, err = tasks.NewImageProcessingTask("http://test.com/image")
+	if err != nil {
+		log.Fatalf("could not create task: %v\n", err)
+	}
+	info, err = client.Enqueue(task, asynq.MaxRetry(10), asynq.Timeout(3*time.Minute))
+	if err != nil {
+		log.Fatalf("could not enqueue task: %v\n", err)
+	}
+	log.Printf("enqueued task: id=%s queue=%s\n", info.ID, info.Queue)
+
+	task, err = tasks.NewEmailTask("[email protected]", "Welcome!", "Thank you for signing up.")
+	if err != nil {
+		log.Fatalf("could not create task: %v\n", err)
+	}
+
+	info, err = client.Enqueue(task, asynq.ProcessIn(10*time.Minute), asynq.Queue("critical"))
+	if err != nil {
+		log.Fatalf("could not enqueue task: %v", err)
+	}
+	log.Printf("enqueued task: id=%s queue=%s\n", info.ID, info.Queue)
+}
+
+```
+
+## setup consumer to consumer jobs
+
+```golang
+package main
+
+import (
+	"log"
+
+	"github.com/hibiken/asynq"
+	"github.com/leetcode-golang-classroom/golang-sample-with-asyncq/internal/config"
+	"github.com/leetcode-golang-classroom/golang-sample-with-asyncq/internal/tasks"
+)
+
+func main() {
+	redisClientOpt, err := asynq.ParseRedisURI(config.AppConfig.RedisURL)
+	if err != nil {
+		log.Fatalf("failed to parse redis url: %v", err)
+	}
+
+	srv := asynq.NewServer(
+		redisClientOpt,
+		asynq.Config{
+			Concurrency: 10,
+			Queues: map[string]int{
+				"critical": 6,
+				"default":  3,
+				"low":      1,
+			},
+		},
+	)
+
+	// mux maps a type to a handler
+	mux := asynq.NewServeMux()
+	mux.HandleFunc(tasks.TypeEmail, tasks.EmailTaskHandler)
+	mux.HandleFunc(tasks.TypeReport, tasks.ReportTaskHandler)
+	mux.Handle(tasks.TypeImageProcessing, tasks.NewImageProcessor())
+	if err := srv.Run(mux); err != nil {
+		log.Fatalf("could not run server: %v", err)
+	}
+}
+```