5 important Mistakes made by Nodejs Developers

1. Lack of Knowledge About Asynchronous Programming : Developers who do not use asynchronous functions correctly can cause performance problems. Developers should be able to decide well what should work synchronously and asynchronously.

async function fetchData() {
  try {
    const response = await fetch('https://api.example.com/data');
    const data = await response.json();
    return data;
  } catch (error) {
    console.log('Error fetching data:', error);
  }
}

fetchData().then((data) => {
  console.log('Data fetched:', data);
}).catch((error) => {
  console.log('Error:', error);
});

In this example, the fetchData function is defined with the async keyword, which allows us to use await to pause the execution of the function until the API request is completed. Once the data is retrieved, the await keyword is used again to extract the JSON data from the response.

The function returns the data, which is then logged to the console in the then block of a promise. If there is an error during the API request, the catch block will log the error to the console.

2. Memory Leaks : Node.js uses garbage collector to minimize memory leaks. However, developers’ code can have memory leaks, which can lead to performance issues.