DNS cache is an essential component of the DNS resolution process. It helps in speeding up the browsing experience by storing the IP addresses of recently visited websites. However, it can sometimes lead to issues if not managed properly. This guide will help you understand how to manage the DNS cache on your device.

What is DNS Cache?

DNS cache is a temporary storage of DNS records on your device. When you visit a website, your device sends a DNS query to a DNS server to resolve the domain name to an IP address. The DNS server responds with the IP address, and your device stores this information in the DNS cache. The next time you visit the same website, your device checks the DNS cache first before sending a new DNS query.

Why Manage DNS Cache?

  1. Improve Performance: Clearing the DNS cache can help improve the performance of your internet connection.
  2. Fix DNS Issues: If you are experiencing DNS-related issues, clearing the DNS cache can often resolve them.
  3. Update Records: Clearing the DNS cache ensures that you get the latest DNS records for a website.

How to Clear DNS Cache

For Windows

  1. Open the Command Prompt as an administrator.
  2. Type ipconfig /flushdns and press Enter.

For macOS

  1. Open the Terminal.
  2. Type sudo dscacheutil -flushcache and press Enter.

For Android

  1. Go to Settings > Wi-Fi.
  2. Tap on the Wi-Fi network you are connected to.
  3. Tap on the gear icon and then choose "Forget network".
  4. Go back to the Wi-Fi settings and reconnect to the network.

For iOS

  1. Go to Settings > Wi-Fi.
  2. Tap the information icon next to the Wi-Fi network you are connected to.
  3. Scroll down and tap "Forget This Network".
  4. Go back to the Wi-Fi settings and reconnect to the network.

Troubleshooting DNS Cache Issues

If you are still experiencing DNS issues after clearing the cache, here are a few troubleshooting steps:

  1. Check Your DNS Settings: Ensure that your DNS settings are correct. You can use a public DNS server like Google DNS (8.8.8.8 and 8.8.4.4) or Cloudflare DNS (1.1.1.1 and 1.0.0.1).
  2. Restart Your Device: Sometimes, a simple restart can resolve DNS issues.
  3. Check for Interference: Ensure that there is no interference from firewalls or other network security tools.

For more information on DNS cache management and troubleshooting, you can visit our DNS Cache Management FAQ.

DNS Cache Management