Get Retrieve the Pos information based on the key

SerialTransaction serializable transaction For now, the commit of a serializable transaction is unlikely to conflict so no retry is required

Set writes data to the db, but instead of writing it back to memtable, it writes to pendingWrites first

Put Stores the Pos information for key pairs in the index

Add adds delta, which may be negative, to the WaitGroup counter.

Done decrements the WaitGroup counter by one

MakeErrReply creates StandardErrReply

Del Delete the Pos information based on the key

RegisterCommand registers a new command arity means allowed number of cmdArgs, arity < 0 means len(args) >= -arity. for example: the arity of `get` is

Wait blocks until the WaitGroup counter is zero.

Write Writing bytes of data to a file

Iterator Index iterator

Sync Make data persistent

MakeStatusReply creates StatusReply

MakeIntReply creates int reply

Get the key first in pendingWrites, if not then in db

* ---- data Access ----- */ GetEntity returns DataEntity bind to given key

Count get the num of all the data

Close Close the driver

MakeMultiBulkReply creates MultiBulkReply

PutEntity a DataEntity into DB

isEmpty checks if the heap is empty.

relay relays command to peer select db by c.GetDBIndex() cannot call Prepare, Commit, execRollback of self node

Fold gets all the keys and executes the function passed in by the user. Terminates the traversal when the function returns false

MakeArgNumErrReply represents wrong number of arguments for command

MakeBulkReply creates BulkReply

RWTransaction Read/Write transaction if retryOnConflict is true, then the transaction will automatically retry until the transaction commits correctly

prase LogRecord's Key and get the real key with txId

rollback