AseemWangoo

type Users struct {
 ID          uuid.UUID `json:"id"`
 Name        string    `json:"name"`
 Age         int       `json:"age"`
 CreatedTime string    `json:"created_time"`
 UpdatedTime string    `json:"updated_time"`
 Source      string    `json:"source"`
}

AseemWangoo

client := redis.NewClient(&redis.Options{
 Addr:        "127.0.0.1:6379",
 DB:          0,
 DialTimeout: 100 * time.Millisecond,
 ReadTimeout: 100 * time.Millisecond,
})

AseemWangoo

func (c *Client) SetUser(key string, user structs.Users) {
 json, err := json.Marshal(user)
 if err != nil {
  log.Fatal(err)
 }
 c.client.Set(key, json, 20*time.Second)
}

AseemWangoo

func (c *Client) GetUser(key string) (user *structs.Users) {
 val, err := c.client.Get(key).Result()
 resp := structs.Users{}
 err = json.Unmarshal([]byte(val), &resp)
 return &resp
}

AseemWangoo

router.HandleFunc("/users/{id}", func(w http.ResponseWriter, r *http.Request) {
 id := mux.Vars(r)["id"]
 val := redis.GetUser(id)
 if val != nil {
  val.Source = "cache"
  renderJSON(w, &val, http.StatusOK)
  return
 }
 user, err := GetUserByID(id)
 if err != nil {

AseemWangoo

// Sample payload we are sending using pub/sub
{
   "id":"116c24b1-9425-4fe4-aec2-86ba7384733e",
   "name":"Bob",
   "age":29,
   "source":"cache"
}
// Publish using Redis PubSub
payload, err := json.Marshal(resp)
if err := c.client.Publish("send-user-name", payload).Err(); err != nil {

AseemWangoo

topic := redisClient.Subscribe("send-user-name")
channel := topic.Channel()
for msg := range channel {
 u := &User{}
 // Unmarshal the data into the user
 err := u.UnmarshalBinary([]byte(msg.Payload))
 if err != nil {
  panic(err)
 }
fmt.Printf("User: %v having age: %v and id: %v\n", u.Name, u.Age, u.ID)

AseemWangoo

const [fetchedData, setFetchedData] = useState([]);
useEffect(() => {
  const getData = async () => {
      const data = await axios.get(
          "http://localhost:8081/users"
      );
      setFetchedData(data);
  };
  getData();
}, []);

AseemWangoo

brew install llvm

AseemWangoo

dart create ffi_2_18
## ffi_2_18 is the name of the project which will be created