SwiftLvDB

A fast key-value storage library , Leveldb for swift.

• support basic types [int,float,double,bool,string...]
• support Object [Object:NSCode]
• support List
• support HashMap
• support memory cache(LRU)
• support Codeable (V2.0.0)

Installation with CocoaPods

pod 'SwiftLvDB'

Usage

Create SwiftLvDB Object

let sldb = SwiftLvDB.sharedInstance
or
let sldb = SwiftLvDB(subName: "sldb")

If you use the same init:subName db in multiple threads, make sure that the SwiftLvDB instance is unique; invoke close() before init:subName

Set value for key

let testValue:String = "hello"
let testKey = "testSaveString"
SwiftLvDB.sharedInstance.set(testValue, forKey: testKey)

Get value for key

let testKey = "testSaveString"
let value = SwiftLvDB.sharedInstance.string(forKey: testKey)

Save struct, ArrayList or HashMap,Suggest use Codeable protocol

struct TestStruct:Codable,Equatable{
    var a:Int
    var b:String
    
    static func == (lhs: Self, rhs: Self) -> Bool{
        return lhs.a == rhs.a && lhs.b == rhs.b
    }
}
let testKey = "testSaveCodeable"
let testvalue = TestStruct(a: 1, b: "hello")
try sldb.set(testvalue, forKey: testKey)
sldb.codeableObject(TestStruct.self, forKey: testKey)

let testValue:[Int] = [1,2,3,4,5]
let testKey = "testSaveList"
try sldb.set(testValue, forKey: testKey)
sldb.codeableObject([Int].self, forKey: testKey)

var testValue:[String:Int] = [:]
testValue["1"] = 1
testValue["2"] = 2
    
let testKey = "testSaveList"
try sldb.set(testValue, forKey: testKey)
sldb.codeableObject([String:Int].self, forKey: testKey)

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License

SwiftLvDB is released under the MIT license. See LICENSE for details.