Built-In Functions

Complete reference for all Couchbase module BIFs.

🔌 Provider & Connection Functions

Functions to access Couchbase components and manage connections:

• couchbaseGetProvider - Get cache provider instance
• couchbaseGetCluster - Get cluster connection
• couchbaseGetBucket - Get bucket instance
• couchbaseGetScope - Get scope instance
• couchbaseGetCollection - Get collection instance

🤖 Vector Search Functions

AI/ML vector operations for semantic search and RAG applications:

• couchbaseVectorSearch - Search by vector similarity
• couchbaseVectorAdd - Store vector documents
• couchbaseVectorGet - Retrieve vector document
• couchbaseVectorDelete - Delete vector document
• couchbaseVectorList - List vector documents

📝 Query Functions

Execute N1QL/SQL++ queries:

• couchbaseQuery - Execute raw N1QL queries

🔒 Distributed Locking Functions

Coordinate operations across multiple servers with distributed locks:

• couchbaseLock - Acquire distributed lock with optional callback
• couchbaseUnlock - Release distributed lock manually

📖 Usage Patterns

Basic Provider Access

// Get provider
provider = couchbaseGetProvider("default");

// Get cluster
cluster = couchbaseGetCluster("default");

// Get bucket
bucket = couchbaseGetBucket("default");

// Get collection
collection = couchbaseGetCollection(
    cacheName = "default",
    scope = "_default",
    collection = "_default"
);

Vector Operations Workflow

// 1. Store vector
id = couchbaseVectorAdd(
    cacheName = "default",
    text = "Document content",
    embedding = getEmbedding(text),
    metadata = { category: "docs" }
);

// 2. Search vectors
results = couchbaseVectorSearch(
    cacheName = "default",
    collection = "mybucket._default._default",
    embedding = getEmbedding(query),
    limit = 5
);

// 3. Retrieve specific vector
doc = couchbaseVectorGet(cacheName = "default", id = id);

// 4. Delete vector
deleted = couchbaseVectorDelete(cacheName = "default", id = id);

Query Patterns

// Simple query
results = couchbaseQuery(
    cacheName = "default",
    query = "SELECT * FROM `mybucket` WHERE type = 'user'"
);

// Parameterized query
results = couchbaseQuery(
    cacheName = "default",
    query = "SELECT * FROM `mybucket` WHERE type = $type AND status = $status",
    parameters = {
        type: "user",
        status: "active"
    }
);

Distributed Locking Patterns

// Callback mode (automatic lock/unlock)
result = couchbaseLock(
    cacheName = "default",
    name = "user-#userId#-update",
    timeout = 5,
    expires = 30,
    callback = function() {
        // Critical section - automatically locked
        user = getUser(userId);
        user.balance += amount;
        saveUser(user);
        return { success: true };
    }
);

// Manual mode (you control unlock)
lockInfo = couchbaseLock(
    cacheName = "default",
    name = "inventory-#productId#",
    timeout = 5,
    expires = 30
);

if (lockInfo.locked) {
    try {
        // Critical section
        updateInventory(productId);
    } finally {
        couchbaseUnlock("default", "inventory-#productId#", lockInfo.cas);
    }
}

🔗 Related Documentation

• API Usage Guide - Detailed examples
• AI Memory Guide - Vector search patterns
• Distributed Locking Guide - Lock patterns and best practices
• Reference Overview - Configuration and settings
• Troubleshooting - Common issues