Package xid is a globally unique id generator suited for web scale Xid is using Mongo Object ID algorithm to generate globally unique ids: https://docs.mongodb.org/manual/reference/object-id/ - 4-byte value representing the seconds since the Unix epoch, - 3-byte machine identifier, - 2-byte process id, and - 3-byte counter, starting with a random value.

net.LookupIP may cause deadlock in windows https://github.com/golang/go/issues/24178 */.

NewChecker args:timeout : tcp timeout milliseconds ,connect to hostinterval: recheck domain interval seconds.

Creates a new concurrent map.

NewLeakyBuf creates a leaky buffer which can hold at most n buffer, each with bufSize bytes.

NewReader returns a reader that implements io.Reader with rate limiting.

NewReaderWithContext returns a reader that implements io.Reader with rate limiting.

NewWriter returns a writer that implements io.Writer with rate limiting.

NewWriterWithContext returns a writer that implements io.Writer with rate limiting.

data.len(2) + hmacsha1(10) + data(4096).

A "thread" safe string to anything map.

Used by the Iter & IterBuffered functions to wrap two variables together over a channel,.

A "thread" safe map of type string:Anything.

Iterator callback,called for every key,value found in maps.

Callback to return new element to be inserted into the map It is called while lock is held, therefore it MUST NOT try to access other keys in same map, as it can lead to deadlock since Go sync.RWLock is not reentrant.