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What does the Expires header do?
The Expires header contains the date/time after which the response is considered stale. Invalid dates, like the value 0, represent a date in the past and mean that the resource is already expired.
What is last modified header?
The Last-Modified response HTTP header contains the date and time at which the origin server believes the resource was last modified. It is used as a validator to determine if a resource received or stored is the same. Less accurate than an ETag header, it is a fallback mechanism.
What is Pragma HTTP header?
The Pragma HTTP/1.0 general header is an implementation-specific header that may have various effects along the request-response chain. It is used for backwards compatibility with HTTP/1.0 caches where the Cache-Control HTTP/1.1 header is not yet present.
Which is the best definition for expiration?
noun. a coming to an end; termination; close: the expiration of a contract. the act of expiring, or breathing out; emission of air from the lungs.
What are the special days of the year?
July | Special Days of the Year. 1 1 st July – Creative Ice Cream Flavors Day. There’s nothing more refreshing on a glorious summers day than an ice cream. But today isn’t just about 2 2 nd July – I Forgot Day. 3 3 rd July – International Plastic Bag Free Day. 4 4 th July – Independence from Meat Day. 5 5 th July – Bikini Day.
Why is July 22 a special day of the year?
22 nd July – Hammock Day. The hammock was first invented by the Mayan thousands of years ago in Mesoamerica, and introduced to Europe by Christopher Columbus. Hammocks are still hugely popular today and with good reason! They’re proven to give you a deeper and more relaxed sleep than just a regular bed.
What’s the name of the day of the month in July?
19 th July – Daiquiri Day. Supposedly invented by American mining engineer Jennings Cox during his time in Cuba at the turn of the 20 th Century, this drink has since become one of the most well-known cocktails out there. So celebrate in style with a nice refreshing daiquiri!
What is the importance of national thermal engineer day?
National Thermal Engineer Day is observed every year on 24 July to show the importance of advancing the thermal engineering industry and is provide the electronics industry with innovative, high-quality, and cost-effective thermal management and its packaging solutions.