1 Byte = 8 bits
1 byte = 1 ASCII character.
2 bytes = 1 UTF-16
2^32 = 4,294,967,296
1 KB = 1000 Bytes
1 MB = 1000 KB
1 GB = 1000 MB
1 TB = 1000 GB
1 PB = 1000TB
1 Million = 1,000,0000 = 10^6
1 Billion = 1,000,000,000 = 10^9
1 Trillion = 1,000,000,000,000 = 10^12
Request Calculation per second
1 M req per day = 1 M req / 86400 seconds = 12 req per second
1.5 M req per day = 1.5 * (1 M req / 86400 seconds) = 18 req per second
10 M req per day = 10 M req / 86400 seconds = 120 req per second
1 B req per day = 1B req / 86400 seconds = 12000 req per second
Redis can handle 81000 req per second
Number of users
Twitter users = 300 million active monthly users
Youtube = 2 Billion active monthly users
Number of videos watched per day = 5 billion
Facebook users 3 billion users out of which 2 billion are daily active users
Pastebin users = 17 million
Bitly = 600 million bitly link created per month.
Name | Length |
|---|---|
| char | 1 byte |
| short | 2 bytes |
| int | 4 bytes |
| long | 4 bytes |
| float | 4 bytes |
| double | 8 bytes |
| long double | 16 bytes Note that on AIX® and Linux® PPC a long double is 8 bytes. |
| pointer | 4 bytes |
| ptrdiff_t | 4 bytes |
| size_t | 4 bytes |
| time_t | 4 bytes |
| clock_t | 4 bytes |
Videos :
