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Menambahkan kolom dokumen Firestore saat menggunakan sharding
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[[["Mudah dipahami","easyToUnderstand","thumb-up"],["Memecahkan masalah saya","solvedMyProblem","thumb-up"],["Lainnya","otherUp","thumb-up"]],[["Sulit dipahami","hardToUnderstand","thumb-down"],["Informasi atau kode contoh salah","incorrectInformationOrSampleCode","thumb-down"],["Informasi/contoh yang saya butuhkan tidak ada","missingTheInformationSamplesINeed","thumb-down"],["Masalah terjemahan","translationIssue","thumb-down"],["Lainnya","otherDown","thumb-down"]],[],[[["\u003cp\u003eThis document provides code samples for incrementing a Firestore document field using shards across multiple programming languages, including C#, Go, Node.js, PHP, Python, and Ruby.\u003c/p\u003e\n"],["\u003cp\u003eThe core concept demonstrated is incrementing a randomly selected shard's count by 1 using \u003ccode\u003eFieldValue.increment(1)\u003c/code\u003e or equivalent methods.\u003c/p\u003e\n"],["\u003cp\u003eEach code sample shows how to select a random shard within a designated collection to apply the increment operation, and requires Application Default Credentials to be set up for Firestore authentication.\u003c/p\u003e\n"],["\u003cp\u003eThe document references external documentation on distributed counters, explaining the use case and purpose of this pattern in Firestore.\u003c/p\u003e\n"],["\u003cp\u003eThe document also makes a reference to the google cloud sample browser, where you can search for more samples regarding google cloud products.\u003c/p\u003e\n"]]],[],null,["# Incrementing a Firestore document field while using shards\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 /// Increment a randomly picked shard by 1.\n /// \u003c/summary\u003e\n /// \u003cparam name=\"docRef\"\u003eThe document reference \u003csee cref=\"DocumentReference\"/\u003e\u003c/param\u003e\n /// \u003creturns\u003eThe \u003csee cref=\"Task\"/\u003e\u003c/returns\u003e\n private static async Task IncrementCounterAsync(DocumentReference docRef, int numOfShards)\n {\n int documentId;\n lock (s_randLock)\n {\n documentId = s_rand.Next(numOfShards);\n }\n var shardRef = docRef.Collection(\"shards\").Document(documentId.ToString());\n await shardRef.UpdateAsync(\"count\", FieldValue.Increment(1));\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 // incrementCounter increments a randomly picked shard.\n func (c *Counter) incrementCounter(ctx context.Context, docRef *firestore.DocumentRef) (*firestore.WriteResult, error) {\n \tdocID := strconv.Itoa(rand.Intn(c.numShards))\n\n \tshardRef := docRef.Collection(\"shards\").Doc(docID)\n \treturn shardRef.Update(ctx, []firestore.Update{\n \t\t{Path: \"Count\", Value: firestore.Increment(1)},\n \t})\n }\n\n### Node.js\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 function incrementCounter(docRef, numShards) {\n const shardId = Math.floor(Math.random() * numShards);\n const shardRef = docRef.collection('shards').doc(shardId.toString());\n return shardRef.set({count: FieldValue.increment(1)}, {merge: true});\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 $ref = $db-\u003ecollection('samples/php/distributedCounters');\n $numShards = 0;\n $docCollection = $ref-\u003edocuments();\n foreach ($docCollection as $doc) {\n $numShards++;\n }\n $shardIdx = random_int(0, max(1, $numShards) - 1);\n $doc = $ref-\u003edocument((string) $shardIdx);\n $doc-\u003eupdate([\n ['path' =\u003e 'Cnt', 'value' =\u003e FieldValue::increment(1)]\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 increment_counter(self, doc_ref):\n \"\"\"Increment a randomly picked shard.\"\"\"\n doc_id = random.randint(0, self._num_shards - 1)\n\n shard_ref = doc_ref.collection(\"shards\").document(str(doc_id))\n return shard_ref.update({\"count\": firestore.Increment(1)})\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 # Select a shard of the counter at random\n shard_id = rand 0...num_shards\n shard_ref = firestore.doc \"#{collection_path}/#{shard_id}\"\n\n # increment counter\n shard_ref.update({ count: firestore.https://cloud.google.com/ruby/docs/reference/google-cloud-firestore/latest/Google-Cloud-Firestore-Client.html(1) })\n\n puts \"Counter incremented.\"\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)."]]
