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30f61b7630
In this commit, we modify the WitnessCache's AddPreimage method to accept a variadic number of preimages. This enables callers to batch preimage writes in performance critical areas of the codebase, e.g. the htlcswitch. Additionally, we lift the computation of the witnesses' keys outside of the db transaction. This saves us from having to do hashing inside and blocking other callers, and limits extraneous blocking at the call site.
channeldb
The channeldb implements the persistent storage engine for lnd and
generically a data storage layer for the required state within the Lightning
Network. The backing storage engine is
boltdb, an embedded pure-go key-value store
based off of LMDB.
The package implements an object-oriented storage model with queries and mutations flowing through a particular object instance rather than the database itself. The storage implemented by the objects includes: open channels, past commitment revocation states, the channel graph which includes authenticated node and channel announcements, outgoing payments, and invoices
Installation and Updating
$ go get -u github.com/lightningnetwork/lnd/channeldb