warp-contracts-lmdb

Warp Contracts Lmdb Cache

Warp Contracts implementation of the SortKeyCache using the LMDB database. Compatible only with node env.

LMDB is a much better solution (than LevelDB) in terms of read/write access times and concurrency.
Comparison by Mozilla.

Installation

Note: lmdb cache is compatible only with node.js env.

yarn add warp-contracts-lmdb

Requires warp-contracts SDK ver. min. 1.2.17

Custom options

LmdbCache constructor accepts a second param with custom configuration.

Option	Required	Description
maxEntriesPerContract	false	Maximum number of interactions stored per contract id - above this threshold adding another entry triggers removing old interactions.
minEntriesPerContract	false	Minimum number of interactions stored per contract id. Value used when removing old iteractions.

Usage

const {defaultCacheOptions, WarpFactory} = require("warp-contracts");
const {LmdbCache} = require("warp-contracts-lmdb");

const warp = WarpFactory
  .forMainnet()
  .useStateCache(new LmdbCache({
      ...defaultCacheOptions,
      dbLocation: `./cache/warp/state`
    }, {
      maxEntriesPerContract: 100, 
      minEntriesPerContract: 10
    }
  ))
  .useContractCache(
    // Contract cache
    new LmdbCache({
    ...defaultCacheOptions,
    dbLocation: `./cache/warp/contracts`
    }), 
    // Source cache
    new LmdbCache({
    ...defaultCacheOptions,
    dbLocation: `./cache/warp/src`
  }));