sync version of Get, please refer to the async version {@link #asyncGet(byte[], byte[], int)}

sync version of Set, please refer to the async version {@link #asyncSet(byte[], byte[], byte[], int, int)} and {@link #asyncSet(byte[], byte[], byte[]

return total data size in the block

TODO(wutao): rename to negotiation_status_to_string

begin() and end() for using range-for over positional args.

String returns the name of the Codec implementation.

init app counter create counters for some specific service_app, so different service_app can create counter with the same name.

arguments: k1=v1;k2=v2;k3=v3; ... e.g., port = %port% timeout = %timeout% arguments: port=23466;timeout=1000 or arguments: ports=23466,timout=1000

Get value. @param tableName TableHandler name @param hashKey used to decide which partition to get this k-v, if null or length == 0, means no has

Get the string value.

sync version of Del, please refer to the async version {@link #asyncDel(byte[], byte[], int)}

string_view::substr() Returns a "substring" of the `string_view` (at offset `pos` and length `n`) as another string_view. This function throws `std::

Close the client. The client can not be used again after closed.

Get the next item. @return item like {@literal <<hashKey, sortKey>, value>}; null returned if scan completed. @throws PException

Delete value. @param tableName TableHandler name @param hashKey used to decide which partition to put this k-v, if null or length == 0, means no

extern*/

string_view::back() Returns the last element of a `string_view`.

Get multiple values under the same hash key. @param tableName table name @param hashKey used to decide which partition to put this k-v, should not be

string_view::end() Returns an iterator pointing just beyond the last character at the end of the `string_view`. This iterator acts as a placeholder;

Atomically check and mutate by key. If the check condition is satisfied, then apply to mutate. @param tableName the table name. @param hashKey the ha

Atomically check and set value by key. If the check condition is satisfied, then apply to set value. @param tableName the table name. @param hashKey

string_view::rbegin() Returns a reverse iterator pointing to the last character at the end of the `string_view`, or `rend()` if the `string_view` is

TODO(yingchun): remove the return value because it's always 0.

string_view::empty() Checks if the `string_view` is empty (refers to no characters).

TODO(wutao): call it add_advice()