[v1.16] Collection metadata docs (#1986)

* wip: initial docs

* docs: Go snippets

Signed-off-by: Anush008 <anushshetty90@gmail.com>

* docs: Java snippets

Signed-off-by: Anush008 <anushshetty90@gmail.com>

* docs: Removed TODO!

Signed-off-by: Anush008 <anushshetty90@gmail.com>

* docs: C# snippets

Signed-off-by: Anush008 <anushshetty90@gmail.com>

* move collection metadata section into collection info

* fix code fence mismatch in markdown

* Remove empty line

---------

Signed-off-by: Anush008 <anushshetty90@gmail.com>
Co-authored-by: Anush008 <anushshetty90@gmail.com>
Co-authored-by: trean <trean.mi@gmail.com>
Co-authored-by: Tim Visée <tim@visee.me>

qdrant-landing/content/documentation/concepts/collections.md

@@ -334,6 +334,42 @@ created and `indexed_vectors_count` might be equal to `0`.
 
 It is possible to reduce the `indexing_threshold` for an existing collection by [updating collection parameters](#update-collection-parameters).
 
+### Collection metadata
+
+*Available as of v1.16.0*
+
+For convenience and better data organization, Qdrant allows attaching custom metadata to collections in the form of key-value pairs.
+Adding metadata is treated as a part of collection configuration and synchronized across all nodes in a cluster with consensus protocol.
+
+Collection metadata can be specified during collection creation:
+
+{{< code-snippet path="/documentation/headless/snippets/create-collection/with-metadata/" >}}
+
+as well as updated later:
+
+{{< code-snippet path="/documentation/headless/snippets/update-collection/with-metadata/" >}}
+
+Note, that update operation only modifies the specified metadata fields, leaving other fields unchanged.
+
+When specified, metadata is returned as part of collection info:
+
+``` json
+{
+    "result": {
+        "config": {
+            "metadata": {
+                "my-metadata-field": {
+                    "key-a": "value-a",
+                    "key-b": 42
+                },
+                "another-field": 123
+            }
+        }
+    }
+}
+```
+
+
 ## Collection aliases
 
 In a production environment, it is sometimes necessary to switch different versions of vectors seamlessly.
@@ -372,3 +408,4 @@ For example, you can switch underlying collection with the following command:
 ### List all collections
 
 {{< code-snippet path="/documentation/headless/snippets/list-all-collections/simple/" >}}
+

qdrant-landing/content/documentation/headless/snippets/create-collection/with-metadata/_description.md

@@ -0,0 +1 @@
+This code snippet is used to create a collection with a specific vector configuration and additional metadata. The metadata is provided as a JSON object, allowing you to store custom information about the collection. In this example, we add two metadata fields.

qdrant-landing/content/documentation/headless/snippets/create-collection/with-metadata/bash.md

@@ -0,0 +1,14 @@
+```bash
+curl -X PUT http://localhost:6333/collections/{collection_name} \
+  -H 'Content-Type: application/json' \
+  --data-raw '{
+    "vectors": {
+      "size": 300,
+      "distance": "Cosine"
+    },
+    "metadata": {
+      "my-metadata-field": "value-1",
+      "another-field": 123
+    }
+  }'
+```

qdrant-landing/content/documentation/headless/snippets/create-collection/with-metadata/csharp.md

@@ -0,0 +1,16 @@
+```csharp
+using Qdrant.Client;
+using Qdrant.Client.Grpc;
+
+var client = new QdrantClient("localhost", 6334);
+
+await client.CreateCollectionAsync(
+	collectionName: "{collection_name}",
+	vectorsConfig: new VectorParams { Size = 100, Distance = Distance.Cosine },
+	metadata: new()
+	{
+		["my-metadata-field"] = "value-1",
+		["another-field"] = 123
+	}
+);
+```

qdrant-landing/content/documentation/headless/snippets/create-collection/with-metadata/go.md

@@ -0,0 +1,24 @@
+```go
+import (
+	"context"
+
+	"github.com/qdrant/go-client/qdrant"
+)
+
+client, err := qdrant.NewClient(&qdrant.Config{
+	Host: "localhost",
+	Port: 6334,
+})
+
+client.CreateCollection(context.Background(), &qdrant.CreateCollection{
+	CollectionName: "{collection_name}",
+	VectorsConfig: qdrant.NewVectorsConfig(&qdrant.VectorParams{
+		Size:     100,
+		Distance: qdrant.Distance_Cosine,
+	}),
+	Metadata: qdrant.NewValueMap(map[string]any{
+		"my-metadata-field": "value-1",
+		"another-field":     123,
+	}),
+})
+```

qdrant-landing/content/documentation/headless/snippets/create-collection/with-metadata/http.md

@@ -0,0 +1,13 @@
+```http
+PUT /collections/{collection_name}
+{
+    "vectors": {
+      "size": 300,
+      "distance": "Cosine"
+    },
+    "metadata": {
+      "my-metadata-field": "value-1",
+      "another-field": 123
+    }
+}
+```

qdrant-landing/content/documentation/headless/snippets/create-collection/with-metadata/java.md

@@ -0,0 +1,34 @@
+```java
+import java.util.Map;
+
+import static io.qdrant.client.ValueFactory.value;
+
+import io.qdrant.client.grpc.Collections.CreateCollection;
+import io.qdrant.client.grpc.Collections.Distance;
+import io.qdrant.client.grpc.Collections.VectorParams;
+import io.qdrant.client.grpc.Collections.VectorsConfig;
+import io.qdrant.client.QdrantClient;
+import io.qdrant.client.QdrantGrpcClient;
+
+QdrantClient client = new QdrantClient(
+    QdrantGrpcClient.newBuilder("localhost", 6334, false).build());
+
+client
+    .createCollectionAsync(
+        CreateCollection.newBuilder()
+            .setCollectionName("{collection_name}")
+            .setVectorsConfig(
+                VectorsConfig.newBuilder()
+                    .setParams(
+                        VectorParams.newBuilder()
+                            .setDistance(Distance.Cosine)
+                            .setSize(100)
+                            .build())
+                    .build())
+            .putAllMetadata(
+                Map.of(
+                    "my-metadata-field", value("value-1"),
+                    "another-field", value(123)))
+            .build())
+    .get();
+```

qdrant-landing/content/documentation/headless/snippets/create-collection/with-metadata/python.md

@@ -0,0 +1,13 @@
+```python
+from qdrant_client import QdrantClient, models
+
+client = QdrantClient(url="http://localhost:6333")
+
+client.create_collection(
+    collection_name="{collection_name}",
+    metadata={
+        "my-metadata-field": "value-1",
+        "another-field": 123
+    },
+)
+```

qdrant-landing/content/documentation/headless/snippets/create-collection/with-metadata/rust.md

@@ -0,0 +1,22 @@
+```rust
+use qdrant_client::qdrant::{CreateCollectionBuilder, Distance, VectorParamsBuilder};
+use qdrant_client::Qdrant;
+use serde_json::{json, Value};
+use std::collections::HashMap;
+
+let client = Qdrant::from_url("http://localhost:6334").build()?;
+
+
+let mut metadata: HashMap<String, Value> = HashMap::new();
+metadata.insert("my-metadata-field".to_string(), json!("value-1"));
+metadata.insert("another-field".to_string(), json!(123));
+
+
+client
+    .create_collection(
+        CreateCollectionBuilder::new("{collection_name}")
+            .vectors_config(VectorParamsBuilder::new(100, Distance::Cosine))
+            .metadata(metadata),
+    )
+    .await?;
+```

qdrant-landing/content/documentation/headless/snippets/create-collection/with-metadata/typescript.md

@@ -0,0 +1,13 @@
+```typescript
+import { QdrantClient } from "@qdrant/js-client-rest";
+
+const client = new QdrantClient({ host: "localhost", port: 6333 });
+
+client.createCollection("{collection_name}", {
+  vectors: { size: 100, distance: "Cosine" },
+  metadata: {
+    "my-metadata-field": "value-1",
+    "another-field": 123
+  }
+});
+```

qdrant-landing/content/documentation/headless/snippets/update-collection/simple/java.md

@@ -2,10 +2,12 @@
 import io.qdrant.client.grpc.Collections.OptimizersConfigDiff;
 import io.qdrant.client.grpc.Collections.UpdateCollection;
 
-client.updateCollectionAsync(
+client
+    .updateCollectionAsync(
         UpdateCollection.newBuilder()
             .setCollectionName("{collection_name}")
             .setOptimizersConfig(
                 OptimizersConfigDiff.newBuilder().setIndexingThreshold(10000).build())
-        .build());
+            .build())
+    .get();
 ```

qdrant-landing/content/documentation/headless/snippets/update-collection/with-metadata/_description.md

@@ -0,0 +1 @@
+Update collection metadata. This example demonstrates how to overwrite a specific field in the collection's metadata while leaving other fields unchanged. Collection metadata can be any JSON object that provides additional information about the collection.

qdrant-landing/content/documentation/headless/snippets/update-collection/with-metadata/bash.md

@@ -0,0 +1,12 @@
+```bash
+curl -X PATCH http://localhost:6333/collections/{collection_name} \
+  -H 'Content-Type: application/json' \
+  --data-raw '{
+    "metadata": {
+      "my-metadata-field": {
+        "key-a": "value-a",
+        "key-b": 42    
+      }
+    }
+  }'
+```

qdrant-landing/content/documentation/headless/snippets/update-collection/with-metadata/csharp.md

@@ -0,0 +1,19 @@
+```csharp
+using Qdrant.Client;
+using Qdrant.Client.Grpc;
+
+var client = new QdrantClient("localhost", 6334);
+
+await client.UpdateCollectionAsync(
+	collectionName: "{collection_name}",
+	optimizersConfig: new OptimizersConfigDiff { IndexingThreshold = 10000 },
+	metadata: new()
+	{
+		["my-metadata-field"] = new Dictionary<string, Value>
+		{
+			["key-a"] = "value-a",
+			["key-b"] = 42
+		},
+	}
+);
+```

qdrant-landing/content/documentation/headless/snippets/update-collection/with-metadata/go.md

@@ -0,0 +1,25 @@
+```go
+import (
+	"context"
+
+	"github.com/qdrant/go-client/qdrant"
+)
+
+client, err := qdrant.NewClient(&qdrant.Config{
+	Host: "localhost",
+	Port: 6334,
+})
+
+client.UpdateCollection(context.Background(), &qdrant.UpdateCollection{
+	CollectionName: "{collection_name}",
+	OptimizersConfig: &qdrant.OptimizersConfigDiff{
+		IndexingThreshold: qdrant.PtrOf(uint64(10000)),
+	},
+	Metadata: qdrant.NewValueMap(map[string]any{
+		"my-metadata-field": map[string]any{
+			"key-a": "value-a",
+			"key-b": 42,
+		},
+	}),
+})
+```

qdrant-landing/content/documentation/headless/snippets/update-collection/with-metadata/http.md

@@ -0,0 +1,11 @@
+```http
+PATCH /collections/{collection_name}
+{
+    "metadata": {
+        "my-metadata-field": {
+            "key-a": "value-a",
+            "key-b": 42
+        }
+    }
+}
+```

qdrant-landing/content/documentation/headless/snippets/update-collection/with-metadata/java.md

@@ -0,0 +1,24 @@
+```java
+import java.util.Map;
+
+import static io.qdrant.client.ValueFactory.value;
+
+import io.qdrant.client.grpc.Collections.OptimizersConfigDiff;
+import io.qdrant.client.grpc.Collections.UpdateCollection;
+
+client
+    .updateCollectionAsync(
+        UpdateCollection.newBuilder()
+            .setCollectionName("{collection_name}")
+            .setOptimizersConfig(
+                OptimizersConfigDiff.newBuilder().setIndexingThreshold(10000).build())
+            .putAllMetadata(
+                Map.of(
+                    "my-metadata-field",
+                    value(
+                        Map.of(
+                            "key-a", value("value-a"),
+                            "key-b", value(42)))))
+            .build())
+    .get();
+```

qdrant-landing/content/documentation/headless/snippets/update-collection/with-metadata/python.md

@@ -0,0 +1,11 @@
+```python
+client.update_collection(
+    collection_name="{collection_name}",
+    metadata={
+        "my-metadata-field": {
+            "key-a": "value-a",
+            "key-b": 42
+        }
+    },
+)
+```

qdrant-landing/content/documentation/headless/snippets/update-collection/with-metadata/rust.md

@@ -0,0 +1,20 @@
+```rust
+use qdrant_client::qdrant::{UpdateCollectionBuilder};
+use qdrant_client::Qdrant;
+use serde_json::{json, Value};
+use std::collections::HashMap;
+
+let client = Qdrant::from_url("http://localhost:6334").build()?;
+
+let mut metadata: HashMap<String, Value> = HashMap::new();
+metadata.insert("my-metadata-field".to_string(), json!({
+    "key-a": "value-a",
+    "key-b": 42
+}));
+
+client
+    .update_collection(
+        UpdateCollectionBuilder::new("{collection_name}").metadata(metadata),
+    )
+    .await?;
+```

qdrant-landing/content/documentation/headless/snippets/update-collection/with-metadata/typescript.md

@@ -0,0 +1,10 @@
+```typescript
+client.updateCollection("{collection_name}", {
+  metadata: {
+    "my-metadata-field": {
+      "key-a": "value-a",
+      "key-b": 42
+    }
+  },
+});
+```