Realm: Create reactive mobile apps in a fraction of the time

更好的移动端数据库意味着更好的移动端应用。

Realm 快速、易用并且免费，深受开发者和亿万用户喜爱。

Arccos Golf ups its game with Realm

Arccos delivers a fast, responsive app experience with both online and offline availability for golfers around the world.

顶级的应用，炫目的功能

团队无论大小，都能从 Realm 移动端平台获益。它为您解决了复杂的问题例如双向同步和实时协作，使您能够拥有更多的时间让应用变得独一无二。

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Realtime collaboration in as little as 10 lines of code

See the Realm Mobile Platform demo app in action and the developer experience

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Realm 移动端平台

只需要不到十行代码，就能为你的应用部署数据同步服务及创建交互式的体验。Realm 对象服务和 Realm 移动端数据库组成了 Realm 移动端平台。

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// Authenticating the User
[RLMSyncUser logInWithCredentials:[RLMSyncCredentials credentialsWithGoogleToken:@"google token"]
                    authServerURL:[NSURL URLWithString:@"http://realm.example.com:9080"]
                     onCompletion:^(RLMSyncUser *user, NSError *error) {
  if (user) {
    // Opening a remote Realm
    NSURL *realmURL = [NSURL URLWithString:@"realm://realm.example.com:9080/~/userRealm"];
    RLMRealmConfiguration *config = [[RLMRealmConfiguration alloc] init];
    config.syncConfiguration = [[RLMSyncConfiguration alloc] initWithUser:user realmURL:realmURL];
    RLMRealm *realm = [RLMRealm realmWithConfiguration:config error:nil];
    // Any changes made to this Realm will be synced across all devices!
  } else if (error) {
    // handle error
  }
}];

// Authenticating the User
SyncUser.logIn(with: .google(token: "google token"),
               server: URL(string: "http://realm.example.com:9080")!)
{ user, error in
  if let user = user {
    // Opening a remote Realm
    let realmURL = URL(string: "realm://realm.example.com:9080/~/userRealm")!
    let config = Realm.Configuration(syncConfiguration: SyncConfiguration(user: user, realmURL: realmURL))
    let realm = try! Realm(configuration: config)
    // Any changes made to this Realm will be synced across all devices!
  } else if let error = error {
    // handle error
  }
}

// Authenticating the User
User user = User.login(Credentials.google("google token"),
                       "http://realm.example.com:9080/auth");
// Opening a remote Realm
String realmURL = "realm://realm.example.com:9080/~/userRealm";
SyncConfiguration configuration = new SyncConfiguration.Builder(user,
                                                                realmURL).build();
Realm realm = Realm.getInstance(syncConfiguration);
// Any changes made to this Realm will be synced across all devices!

// Authenticating the User
Realm.Sync.User.registerWithProvider('http://realm.example.co:9080', 'google', googleAccessToken, (error, user) => {
  if (!error) {
    // Opening a remote Realm
    var realm = new Realm({
      sync: {
        user: user,
        url: 'realm://realm.example.co:9080/~/userRealm',
      }
    });
    // Any changes made to this Realm will be synced across all devices!
  }
})

var user = await User.LoginAsync(Credentials.Google("google token"),
                                 new Uri("http://realm.example.com:9080"));

var realmUrl = new Uri("realm://realm.example.com:9080/~/userRealm");
var config = new SyncConfiguration(user, realmUrl);

var realm = Realm.GetInstance(config);
// Any changes made to this Realm will be synced across all devices!

class Dog {}

Dog.schema = {
  name: 'Dog',
  properties: {
    name: 'string',
    age: 'int',
  }
};

let realm = new Realm();
realm.write(() => {
  realm.create('Dog', {name: 'Rex', age: 1});
});

let pups = realm.objects('Dog').filtered('age > 2');

@interface Dog : RLMObject
@property NSString *name;
@property NSInteger age;
@end
@implementation Dog
@end

Dog *dog = [Dog new];
dog.name = @"Rex";
dog.age = 1;

RLMRealm *realm = [RLMRealm defaultRealm];
[realm transactionWithBlock:^{
  [realm addObject:dog];
}];

RLMResults<Dog *> *allDogs = [Dog allObjects];
RLMResults<Dog *> *pups = [allDogs objectsWhere:@"age < 2"];

class Dog: Object {
  dynamic var name = ""
  dynamic var age = 0
}

let dog = Dog()
dog.name = "Rex"
dog.age = 1

let realm = try! Realm()
try! realm.write {
  realm.add(dog)
}

let pups = realm.objects(Dog.self).filter("age < 2")

public class Dog extends RealmObject {
  public String name;
  public int age;
}

Dog dog = new Dog();
dog.name = "Rex";
dog.age = 1;

Realm realm = Realm.getDefaultInstance();
realm.beginTransaction();
realm.copyToRealm(dog)
realm.commitTransaction();

RealmResults<Dog> pups = realm.where(Dog.class)
                               .lessThan("age", 2)
                               .findAll();

public class Dog : RealmObject 
{
  public string Name { get; set; }
  public int Age { get; set; }
}

var realm = Realm.GetInstance();
realm.Write(() => 
{
  realm.Add(new Dog
  {
    Name = "Rex",
    Age = 1
  });
});

var pups = realm.All<Dog>().Where(d => d.Age < 2);

Realm 移动端数据库

更好的移动端数据库意味着更好的移动端应用。Realm 数据库让移动应用中的数据存储变得轻而易举。我们的数据库产品是 SQLite 和 Core Data 的更易用的替代方案。

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class Dog {}

Dog.schema = {
  name: 'Dog',
  properties: {
    name: 'string',
    age: 'int',
  }
};

let realm = new Realm();
realm.write(() => {
  realm.create('Dog', {name: 'Rex', age: 1});
});

let pups = realm.objects('Dog').filtered('age > 2');

@interface Dog : RLMObject
@property NSString *name;
@property NSInteger age;
@end
@implementation Dog
@end

Dog *dog = [Dog new];
dog.name = @"Rex";
dog.age = 1;

RLMRealm *realm = [RLMRealm defaultRealm];
[realm transactionWithBlock:^{
  [realm addObject:dog];
}];

RLMResults<Dog *> *allDogs = [Dog allObjects];
RLMResults<Dog *> *pups = [allDogs objectsWhere:@"age < 2"];

class Dog: Object {
  dynamic var name = ""
  dynamic var age = 0
}

let dog = Dog()
dog.name = "Rex"
dog.age = 1

let realm = try! Realm()
try! realm.write {
  realm.add(dog)
}

let pups = realm.objects(Dog.self).filter("age < 2")

public class Dog extends RealmObject {
  public String name;
  public int age;
}

Dog dog = new Dog();
dog.name = "Rex";
dog.age = 1;

Realm realm = Realm.getDefaultInstance();
realm.beginTransaction();
realm.copyToRealm(dog)
realm.commitTransaction();

RealmResults<Dog> pups = realm.where(Dog.class)
                               .lessThan("age", 2)
                               .findAll();

public class Dog : RealmObject 
{
  public string Name { get; set; }
  public int Age { get; set; }
}

var realm = Realm.GetInstance();
realm.Write(() => 
{
  realm.Add(new Dog
  {
    Name = "Rex",
    Age = 1
  });
});

var pups = realm.All<Dog>().Where(d => d.Age < 2);

十亿人在使用 Realm

财富500强和 app 商店里的优秀应用，都信任 Realm。每天都有亿万人在使用基于 Realm 创建的 app。

开发者们喜欢 Realm

Open source projects needn't look further than @realm for inspiration on a collaborative development process. https://t.co/WMDudzSJbW 👏👏
— Kaushik Gopal (@kaushikgopal) December 14, 2016

Very impressive! I’m a huge fan of innovative solutions—especially critical processes like data persistence. 💯 https://t.co/lEPxDPyqtP
— Kevin Hoctor (@kevinhoctor) May 25, 2016

@realm is THE thing for mobile app development now. #android #ios #backend
— ¯\_(ツ)_/¯ (@coletzLp) September 27, 2016

I boosted my database of 200,000 rows search from 7 seconds to 0.5 seconds with @realm . Practically under 30 mins of using it 1st time.
— Vijaya P. Kandel (@kandelvijaya) September 11, 2015

I continue to be a massive fan of @realm. If you’re not using this… go home, you’re drunk.
— David McGraw 🎮 (@xmcgraw) March 12, 2016

Me using @realm for the first time: “this CAN’T be that easy. Pretty sure I’m missing something.”
— Marco Sero (@marcosero) April 29, 2015

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