Welcome to DU!
The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards.
Join the community:
Create a free account
Support DU (and get rid of ads!):
Become a Star Member
Latest Breaking News
General Discussion
The DU Lounge
All Forums
Issue Forums
Culture Forums
Alliance Forums
Region Forums
Support Forums
Help & Search
It looks like Twitter is down
And has been for 35 minutes. Trump's head must be ready to explode!
23 replies
= new reply since forum marked as read
= new reply since forum marked as read
Just came back up a minute ago.
The outage map I looked at a little while ago, showed it down for the US Northeast.
Wonder if someone was sick of hearing from RealDonaldTrump 
.
What is a DNS Cache?
A DNS cache (sometimes called a DNS resolver cache) is a temporary database, maintained by a computer's operating system, that contains records of all recent visits and attempted visits to Web sites and other Internet domains.
The Purpose of DNS Caches
The Internet relies on the Domain Name System (DNS) to maintain an index of all public Web sites and their corresponding IP addresses. Every time a user visits a Web site by its name (such as "wireless.about.com" , the user's Web browser initiates a request out to the Internet, but this request cannot be completed until the Web site name is converted into an IP address.
That conversion process - called name resolution - is the job of DNS, and it takes time. A DNS cache attempts to speed up the process by handling the name resolution before the request is sent out to the Internet.
https://www.lifewire.com/what-is-a-dns-cache-817514
A DNS cache (sometimes called a DNS resolver cache) is a temporary database, maintained by a computer's operating system, that contains records of all recent visits and attempted visits to Web sites and other Internet domains.
The Purpose of DNS Caches
The Internet relies on the Domain Name System (DNS) to maintain an index of all public Web sites and their corresponding IP addresses. Every time a user visits a Web site by its name (such as "wireless.about.com"
, the user's Web browser initiates a request out to the Internet, but this request cannot be completed until the Web site name is converted into an IP address.
That conversion process - called name resolution - is the job of DNS, and it takes time. A DNS cache attempts to speed up the process by handling the name resolution before the request is sent out to the Internet.
https://www.lifewire.com/what-is-a-dns-cache-817514
