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https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-internals.html
Expiration time is defined as a 32-bit integer for Unix time (the number of seconds since January 1, 1970, as a 32-bit value), or the number of seconds starting from the current time. flags: Must be mapped to an INTEGER of at least 32-bits and can ... InnoDB API for the InnoDB memcached Plugin The InnoDB memcached engine accesses InnoDB through InnoDB APIs, most of which are directly adopted from embedded ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-row-format.html
The variable-length part of the record header contains a bit vector for indicating NULL columns. If the number of columns in the index that can be NULL is N, the bit vector occupies CEILING(N/8) bytes. (For example, if there are anywhere from 9 to ... The row format of a table determines how its rows are physically stored, which in turn can affect the performance of queries and DML ...
https://dev.mysql.com/doc/refman/8.0/en/known-issues.html
Numeric calculations are done with BIGINT or DOUBLE (both are normally 64 bits long). The general rule is that bit functions are performed with BIGINT precision, IF() and ELT() with BIGINT or DOUBLE precision, and the rest with DOUBLE precision. You ... This section lists known issues in recent versions of ...
https://dev.mysql.com/doc/refman/8.0/en/replication-options-replica.html
--master-retry-count=count Command-Line Format --master-retry-count=# Deprecated Yes Type Integer Default Value 86400 Minimum Value 0 Maximum Value (64-bit platforms) 18446744073709551615 Maximum Value (32-bit platforms) 4294967295 The number of ...
https://dev.mysql.com/doc/refman/8.0/en/account-names.html
For a host value specified as an IPv4 address, a netmask can be given to indicate how many address bits to use for the network number. A netmask typically begins with bits set to 1, followed by bits set to 0. MySQL account names consist of a user ...
https://dev.mysql.com/doc/refman/8.0/en/cast-functions.html
To override this, use the SIGNED or UNSIGNED cast operator to cast a value to a signed or unsigned 64-bit integer, respectively. Table 14.15 Cast Functions and Operators Name Description Deprecated BINARY Cast a string to a binary string 8.0.27 ...
https://dev.mysql.com/doc/refman/8.0/en/charset-unicode.html
They can be encoded in a variable-length encoding using 8, 16, or 24 bits (1 to 3 bytes). They can be encoded in a fixed-length encoding using 16 bits (2 bytes). The UTF-8 (Unicode Transformation Format with 8-bit units) method for encoding Unicode ... The Unicode Standard includes characters from the Basic Multilingual Plane (BMP) and supplementary characters that lie outside the ...
https://dev.mysql.com/doc/refman/8.0/en/disk-issues.html
RAID N can be a problem if you have many writes, due to the time required to update the parity bits. NFS Version 2 clients can only access the lowest 2GB of a file (signed 32 bit offset). NFS Version 3 clients support larger files (up to 64 bit ...
https://dev.mysql.com/doc/refman/8.0/en/enterprise-encryption-functions.html
The function accepts digests but does not require them, as it is also capable of handling data strings of an arbitrary length. The component function accepts digests but does not require them, as it is also capable of handling data strings of an ...
https://dev.mysql.com/doc/refman/8.0/en/enterprise-encryption-installation.html
The functions provided by the openssl_udf shared library allow a minimum key size of 1024 bits. You can set a maximum key size using the MYSQL_OPENSSL_UDF_RSA_BITS_THRESHOLD, MYSQL_OPENSSL_UDF_DSA_BITS_THRESHOLD, and ... In releases before MySQL ...