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Firestore 샤딩된 카운터 만들기
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코드 샘플
C#
Firestore에 인증하려면 애플리케이션 기본 사용자 인증 정보를 설정합니다.
자세한 내용은 로컬 개발 환경의 인증 설정을 참조하세요.
Go
Firestore에 인증하려면 애플리케이션 기본 사용자 인증 정보를 설정합니다.
자세한 내용은 로컬 개발 환경의 인증 설정을 참조하세요.
PHP
Firestore에 인증하려면 애플리케이션 기본 사용자 인증 정보를 설정합니다.
자세한 내용은 로컬 개발 환경의 인증 설정을 참조하세요.
Python
Firestore에 인증하려면 애플리케이션 기본 사용자 인증 정보를 설정합니다.
자세한 내용은 로컬 개발 환경의 인증 설정을 참조하세요.
Ruby
Firestore에 인증하려면 애플리케이션 기본 사용자 인증 정보를 설정합니다.
자세한 내용은 로컬 개발 환경의 인증 설정을 참조하세요.
달리 명시되지 않는 한 이 페이지의 콘텐츠에는 Creative Commons Attribution 4.0 라이선스에 따라 라이선스가 부여되며, 코드 샘플에는 Apache 2.0 라이선스에 따라 라이선스가 부여됩니다. 자세한 내용은 Google Developers 사이트 정책을 참조하세요. 자바는 Oracle 및/또는 Oracle 계열사의 등록 상표입니다.
[[["이해하기 쉬움","easyToUnderstand","thumb-up"],["문제가 해결됨","solvedMyProblem","thumb-up"],["기타","otherUp","thumb-up"]],[["이해하기 어려움","hardToUnderstand","thumb-down"],["잘못된 정보 또는 샘플 코드","incorrectInformationOrSampleCode","thumb-down"],["필요한 정보/샘플이 없음","missingTheInformationSamplesINeed","thumb-down"],["번역 문제","translationIssue","thumb-down"],["기타","otherDown","thumb-down"]],[],[[["\u003cp\u003eThis content demonstrates how to create a sharded counter in Firestore, which is useful for high-frequency counter updates.\u003c/p\u003e\n"],["\u003cp\u003eThe provided code samples initialize a specified number of shards, each with a \u003ccode\u003eCount\u003c/code\u003e of 0, within a subcollection of a Firestore document.\u003c/p\u003e\n"],["\u003cp\u003eCode examples are available in C#, Go, PHP, Python, and Ruby, showcasing implementation across multiple programming languages.\u003c/p\u003e\n"],["\u003cp\u003eAuthentication to Firestore requires setting up Application Default Credentials, with a link provided for detailed instructions.\u003c/p\u003e\n"],["\u003cp\u003eFor further exploration, there are links to detailed documentation on distributed counters and a browser to see code samples for other google cloud services.\u003c/p\u003e\n"]]],[],null,["# Create a Firestore sharded counter\n\nExplore further\n---------------\n\n\nFor detailed documentation that includes this code sample, see the following:\n\n- [Distributed counters](https://firebase.google.com/docs/firestore/solutions/counters)\n- [Support frequent and distributed counters](/firestore/native/docs/solutions/counters)\n\nCode sample\n-----------\n\n### C#\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n /// \u003csummary\u003e\n /// Create a given number of shards as a\n /// subcollection of specified document.\n /// \u003c/summary\u003e\n /// \u003cparam name=\"docRef\"\u003eThe document reference \u003csee cref=\"DocumentReference\"/\u003e\u003c/param\u003e\n private static async Task CreateCounterAsync(DocumentReference docRef, int numOfShards)\n {\n CollectionReference colRef = docRef.Collection(\"shards\");\n var tasks = new List\u003cTask\u003e();\n // Initialize each shard with Count=0\n for (var i = 0; i \u003c numOfShards; i++)\n {\n tasks.Add(colRef.Document(i.ToString()).SetAsync(new Shard() { Count = 0 }));\n }\n await Task.WhenAll(tasks);\n }\n\n### Go\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n\n // initCounter creates a given number of shards as\n // subcollection of specified document.\n func (c *Counter) initCounter(ctx context.Context, docRef *firestore.DocumentRef) error {\n \tcolRef := docRef.Collection(\"shards\")\n\n \t// Initialize each shard with count=0\n \tfor num := 0; num \u003c c.numShards; num++ {\n \t\tshard := Shard{0}\n\n \t\tif _, err := colRef.Doc(strconv.Itoa(num)).Set(ctx, shard); err != nil {\n \t\t\treturn fmt.Errorf(\"Set: %w\", err)\n \t\t}\n \t}\n \treturn nil\n }\n\n### PHP\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n $numShards = 10;\n $ref = $db-\u003ecollection('samples/php/distributedCounters');\n for ($i = 0; $i \u003c $numShards; $i++) {\n $doc = $ref-\u003edocument((string) $i);\n $doc-\u003eset(['Cnt' =\u003e 0]);\n }\n\n### Python\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n def init_counter(self, doc_ref):\n \"\"\"\n Create a given number of shards as\n subcollection of specified document.\n \"\"\"\n col_ref = doc_ref.collection(\"shards\")\n\n # Initialize each shard with count=0\n for num in range(self._num_shards):\n shard = Shard()\n col_ref.document(str(num)).set(shard.to_dict())\n\n### Ruby\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n # project_id = \"Your Google Cloud Project ID\"\n # num_shards = \"Number of shards for distributed counter\"\n # collection_path = \"shards\"\n\n require \"google/cloud/firestore\"\n\n firestore = Google::Cloud::https://cloud.google.com/ruby/docs/reference/google-cloud-firestore/latest/Google-Cloud-Firestore.html.https://cloud.google.com/ruby/docs/reference/google-cloud-firestore/latest/Google-Cloud-Firestore.html project_id: project_id\n\n shards_ref = firestore.col collection_path\n\n # Initialize each shard with count=0\n num_shards.times do |i|\n shards_ref.doc(i).set({ count: 0 })\n end\n\n puts \"Distributed counter shards collection created.\"\n\nWhat's next\n-----------\n\n\nTo search and filter code samples for other Google Cloud products, see the\n[Google Cloud sample browser](/docs/samples?product=firestore)."]]