SnowflakeGenerator

The Snowflake generator is a thread-safe generator of unique "snowflake" ids, which guarantees that ids it generates will always be unique and always increasing in value, provided that there are no two generators with the same node id at the same time.

Here's a simple example of how to generate ids:

auto gen = SnowflakeGenerator(1);
long id = gen.nextId;

For background info on this type of id, please see [Twitter's original blog post on the topic](https://blog.twitter.com/engineering/en_us/a/2010/announcing-snowflake).

struct SnowflakeGenerator {

long DEFAULT_CUSTOM_EPOCH;

this(long nodeId, long epoch);

this(long nodeId);

long nextId();

import std.typecons : Tuple, tuple;;

alias SnowflakeIdInfo = Tuple!(long, "timestamp", long, "nodeId", long, "sequence");

SnowflakeIdInfo parseId(long id);

}

Constructors

this this(long nodeId, long epoch): Constructs the generator using a given node id and epoch offset.
this this(long nodeId): Constructs the generator using a default epoch offset.

Members

Aliases

SnowflakeIdInfo alias SnowflakeIdInfo = Tuple!(long, "timestamp", long, "nodeId", long, "sequence"): An alias for a tuple containing the basic information of a snowflake id.

Functions

nextId long nextId(): Generates a new unique id. Calls to this method are synchronized such that ids from this generator are generated sequentially.
parseId SnowflakeIdInfo parseId(long id): Parses a snowflake id into its constituent parts.

Static variables

DEFAULT_CUSTOM_EPOCH long DEFAULT_CUSTOM_EPOCH;: Undocumented in source.
EPOCH_BITS auto EPOCH_BITS;: Undocumented in source.
MAX_NODE_ID long MAX_NODE_ID;: Undocumented in source.
MAX_SEQUENCE long MAX_SEQUENCE;: Undocumented in source.
NODE_ID_BITS auto NODE_ID_BITS;: Undocumented in source.
SEQUENCE_BITS auto SEQUENCE_BITS;: Undocumented in source.
UNUSED_BITS auto UNUSED_BITS;: Undocumented in source.

SnowflakeGenerator

Constructors

Members

Aliases

Functions

Static variables

Meta

Source

Authors