Checksum是一种用于验证数据完整性的技术。在pt-query-digest中,checksum计算方式是通过将查询语句的字符转换为ASCII码,并将所有字符的ASCII码相加得到一个整数值。例如,将查询语句"SELECT * FROM users WHERE age > 18;"转换为ASCII码后,得到的整数值为83 + 69 + 76 + 69 + 67 + 84 + 32 + 42 + 32 ...
aNo, the receiver cannot be absolutely certain that no bit errors have occurred. This is because of the manner in which the checksum for the packet is calculated. If the corresponding bits (that would be added together) of two 16-bit words in the packet were 0 and 1 then even if these...