修改 Collections
您可以重命名一个 Collection 或更改其设置。本页主要介绍如何修改 Collection。
重新命名 Collections
您可以按以下方式重命名一个 Collection。
from pymilvus import MilvusClient
client = MilvusClient(
uri="http://localhost:19530",
token="root:Milvus"
)
client.rename_collection(
old_name="my_collection",
new_name="my_new_collection"
)
import io.milvus.v2.service.collection.request.RenameCollectionReq;
import io.milvus.v2.client.ConnectConfig;
import io.milvus.v2.client.MilvusClientV2;
String CLUSTER_ENDPOINT = "http://localhost:19530";
String TOKEN = "root:Milvus";
// 1. Connect to Milvus server
ConnectConfig connectConfig = ConnectConfig.builder()
.uri(CLUSTER_ENDPOINT)
.token(TOKEN)
.build();
MilvusClientV2 client = new MilvusClientV2(connectConfig);
RenameCollectionReq renameCollectionReq = RenameCollectionReq.builder()
.collectionName("my_collection")
.newCollectionName("my_new_collection")
.build();
client.renameCollection(renameCollectionReq);
import { MilvusClient, DataType } from "@zilliz/milvus2-sdk-node";
const address = "http://localhost:19530";
const token = "root:Milvus";
const client = new MilvusClient({address, token});
const res = await client.renameCollection({
oldName: "my_collection",
newName: "my_new_collection"
});
import (
"context"
"fmt"
"log"
"github.com/milvus-io/milvus/client/v2"
)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
milvusAddr := "127.0.0.1:19530"
token := "root:Milvus"
cli, err := client.New(ctx, &client.ClientConfig{
Address: milvusAddr,
APIKey: token,
})
if err != nil {
log.Fatal("failed to connect to milvus server: ", err.Error())
}
defer cli.Close(ctx)
err = cli.RenameCollection(ctx, client.NewRenameCollectionOption("my_collection", "my_new_collection"))
if err != nil {
// handle error
}
export CLUSTER_ENDPOINT="http://localhost:19530"
export TOKEN="root:Milvus"
curl --request POST \
--url "${CLUSTER_ENDPOINT}/v2/vectordb/collections/rename" \
--header "Authorization: Bearer ${TOKEN}" \
--header "Content-Type: application/json" \
-d '{
"collectionName": "my_collection",
"newCollectionName": "my_new_collection"
}'
设置 Collections TTL
如果某个 Collectionions 需要在特定时间内丢弃,可以考虑设置其生存时间(TTL),单位为秒。一旦 TTL 超时,Milvus 就会删除集合中的实体并丢弃集合。删除是异步的,这表明在删除完成之前,搜索和查询仍然可以进行。
下面的代码片段演示了如何更改 Collections 的 TTL。
# Currently not available for Python
import io.milvus.v2.service.collection.request.AlterCollectionReq;
import java.util.HashMap;
import java.util.Map;
Map<String, String> properties = new HashMap<>();
properties.put("collection.ttl.seconds", "60");
AlterCollectionReq alterCollectionReq = AlterCollectionReq.builder()
.collectionName("my_collection")
.properties(properties)
.build();
client.alterCollection(alterCollectionReq);
res = await client.alterCollection({
collection_name: "my_collection",
properties: {
"collection.ttl.seconds": 60
}
})
import (
"context"
"fmt"
"log"
"github.com/milvus-io/milvus/client/v2"
"github.com/milvus-io/milvus/pkg/common"
)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
milvusAddr := "127.0.0.1:19530"
token := "root:Milvus"
cli, err := client.New(ctx, &client.ClientConfig{
Address: milvusAddr,
APIKey: token,
})
if err != nil {
log.Fatal("failed to connect to milvus server: ", err.Error())
}
defer cli.Close(ctx)
err = cli.AlterCollection(ctx, client.NewAlterCollectionOption("my_collection").WithProperty(common.CollectionTTLConfigKey, 60))
if err != nil {
// handle error
}
# Currently not available for REST