README
¶
This is an implementation of the LevelDB key/value database in the Go programming language.
Installation
go get github.com/syndtr/goleveldb/leveldb
Usage
Create or open a database:
db, err := leveldb.OpenFile("path/to/db", &opt.Options{Flag: opt.OFCreateIfMissing})
...
Read or modify the database content:
ro := &opt.ReadOptions{}
wo := &opt.WriteOptions{}
data, err := db.Get([]byte("key"), ro)
...
err = db.Put([]byte("key"), []byte("value"), wo)
...
err = db.Delete([]byte("key"), wo)
...
Iterate over database content:
iter := db.NewIterator(ro)
for iter.Next() {
key := iter.Key()
value := iter.Value()
...
}
err = iter.Error()
...
Batch writes:
batch := new(leveldb.Batch)
batch.Put([]byte("foo"), []byte("value"))
batch.Put([]byte("bar"), []byte("another value"))
batch.Delete([]byte("baz"))
err = db.Write(batch, wo)
...
Use bloom filter:
o := &opt.Options{
Flag: opt.OFCreateIfMissing,
Filter: filter.NewBloomFilter(10),
}
db, err := leveldb.Open(stor, o)
...
Documentation
You can read package documentation here.
Directories
¶
| Path | Synopsis |
|---|---|
|
Package leveldb provides implementation of LevelDB key/value database.
|
Package leveldb provides implementation of LevelDB key/value database. |
|
block
Package block allows read and write sorted key/value.
|
Package block allows read and write sorted key/value. |
|
cache
Package cache provides interface and implementation of a cache algorithms.
|
Package cache provides interface and implementation of a cache algorithms. |
|
comparer
Package comparer provides interface and implementation for ordering sets of data.
|
Package comparer provides interface and implementation for ordering sets of data. |
|
errors
Package errors implements functions to manipulate errors.
|
Package errors implements functions to manipulate errors. |
|
filter
Package filter provides interface and implementation of probabilistic data structure.
|
Package filter provides interface and implementation of probabilistic data structure. |
|
hash
Package hash provides hashing utilities used by leveldb.
|
Package hash provides hashing utilities used by leveldb. |
|
iterator
Package iterator provides interface and implementation to traverse over contents of a database.
|
Package iterator provides interface and implementation to traverse over contents of a database. |
|
journal
Package journal allows read and write sequence of data block.
|
Package journal allows read and write sequence of data block. |
|
memdb
Package memdb provide in-memory key/value database implementation.
|
Package memdb provide in-memory key/value database implementation. |
|
opt
Package opt provides sets of options used by LevelDB.
|
Package opt provides sets of options used by LevelDB. |
|
storage
Package storage provides storage abstraction for LevelDB.
|
Package storage provides storage abstraction for LevelDB. |
|
table
Package table allows read and write sorted key/value.
|
Package table allows read and write sorted key/value. |
|
manualtest
|
|
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