// NewIterator initializes a new iterator and returns it.
func (s *Store) NewIterator() *rdb.Iterator {
ro := rdb.NewDefaultReadOptions()
// SetFillCache should be set to false for bulk reads to avoid caching data
// while doing bulk scans.
ro.SetFillCache(false)
return s.db.NewIterator(ro)
}
func (s *Store) setOpts() {
s.opt = rdb.NewDefaultOptions()
s.blockopt = rdb.NewDefaultBlockBasedTableOptions()
s.opt.SetBlockBasedTableFactory(s.blockopt)
// If you want to access blockopt.blockCache, you need to grab handles to them
// as well. Otherwise, they will be nil. However, for now, we do not really need
// to do this.
// s.blockopt.SetBlockCache(rocksdb.NewLRUCache(blockCacheSize))
// s.blockopt.SetBlockCacheCompressed(rocksdb.NewLRUCache(blockCacheSize))
s.opt.SetCreateIfMissing(true)
fp := rdb.NewBloomFilter(16)
s.blockopt.SetFilterPolicy(fp)
s.ropt = rdb.NewDefaultReadOptions()
s.wopt = rdb.NewDefaultWriteOptions()
s.wopt.SetSync(false) // We don't need to do synchronous writes.
}