Firebase观察大型数据库的速度很慢-Firebaseobserveslowforlargedatabase

I am working on an app displaying places (downloaded from firebase) based on user location.

我正在开发一个应用程序，根据用户位置显示位置（从firebase下载）。

I have currently 5k entries and they are displayed in about 10seconds. I plan to have 80k entries and I don't want users to wait that long.

我目前有5k条目，它们在大约10秒内显示。我计划有80k条目，我不希望用户等那么久。

What I did : I created a Place class, I do 'observe'(.value) on my firebase ref and on each child I put each element in an attribute of the Place class. Then the place:Place = Place(attributes) id added to an array:Place until all places have been downloaded.

我做了什么：我创建了一个Place类，我在firebase ref上'观察'（。value），并且在每个子元素上我将每个元素放在Place类的属性中。然后将地点：Place = Place（attributes）id添加到数组中：放置直到所有地点都已下载。

self.ref.queryOrderedByKey().observe(.value, with: {(snapshot) in
                    if snapshot.childrenCount > 0 {
                        for place in snapshot.children.allObjects as! [DataSnapshot] {

When all places are in the array I compare places locations with the user location and sort the array to display them by distance in a tableview.

当所有位置都在数组中时，我将位置与用户位置进行比较，并对数组进行排序，以便在tableview中按距离显示它们。

What I tried: I also tried to use GeoFire but it is slower.

我尝试了什么：我也尝试使用GeoFire，但速度较慢。

How the db looks like (80k elements) :

db的外观如何（80k元素）：

{
"users": {
    "DFkjdhfgYG": {
         "id":"DFkjdhfgYG"
        ,"key2":"value"
        ,"key3":"value"
        ,"key4":"value"
        ,"key5":"value"
        ,"key6":"value"
        ,"key7":"value"
        ,"key8":"value"
        ,"key9":"value"
        ,"key10":"value"
        ,"key11":"value"
        ,"key12":value
        ,"key13":value
        ,"key14":"value"
        ,"key15":"value"
        ,"key16":"value"
        ,"key17":"value"
        ,"key18":"value"
        ,"key19":"value"
        ,"key20":"value"
        ,"key21":value
        ,"key22":value
        ,"key23":value
        ,"key24":value
        ,"key25":value
        ,"key26":"value"
        ,"key27":value
        ,"key28":value
        ,"key29":"value"
        },
     "BVvfdTRZ": {
         "id":"BVvfdTRZ"
        ,"key2":"value"
        ,"key3":"value"
        ,"key4":"value"
        ,"key5":"value"
        ,"key6":"value"
        ,"key7":"value"
        ,"key8":"value"
        ,"key9":"value"
        ,"key10":"value"
        ,"key11":"value"
        ,"key12":value
        ,"key13":value
        ,"key14":"value"
        ,"key15":"value"
        ,"key16":"value"
        ,"key17":"value"
        ,"key18":"value"
        ,"key19":"value"
        ,"key20":"value"
        ,"key21":value
        ,"key22":value
        ,"key23":value
        ,"key24":value
        ,"key25":value
        ,"key26":"value"
        ,"key27":value
        ,"key28":value
        ,"key29":"value"
        }
  }
}

Now I don't know what to do and I absolutely need to user Firebase.

现在我不知道该怎么做，我绝对需要使用Firebase。

Can you help me to improve the way I download firebase db elements, or to show me another way to do it, to make the whole process faster ?

你能帮助我改进我下载firebase db元素的方式，或者告诉我另一种方法，让整个过程更快吗？

Thanks !

谢谢 ！

1 个解决方案

func handleFirebase() {
    DispatchQueue.global(qos: .userInteractive).async {
        self.ref.queryOrderedByKey().observe(.value, with: { (snapshot) in

            guard let value = snapshot.value as? String else { return }
            let key = snapshot.key

            print("KEY: \(key), VALUE: \(value)")

        }, withCancel: nil)
    }
}