Proveedor estatal

import { vcr, State } from '@vonage/vcr-sdk';

// WRONG — random session, data siloed to this replica
// const session = vcr.createSession();
// const state = new State(session);

// CORRECT — shared state across all replicas
const state = vcr.getInstanceState();

// CORRECT — per-conversation state with a deterministic ID
app.post('/onCall', async (req, res) => {
  const session = vcr.createSessionWithId(req.body.conversation_uuid);
  const state = new State(session);
  // ...
});

from vonage_cloud_runtime.vcr import VCR
from vonage_cloud_runtime.providers.state.state import State

vcr = VCR()

# WRONG — random session, data siloed to this replica
# session = vcr.createSession()
# state = State(session)

# CORRECT — shared state across all replicas
state = vcr.getInstanceState()

# CORRECT — per-conversation state with a deterministic ID
session = vcr.createSessionWithId(conversation_uuid)
state = State(session)

const state = new State(session, 'user:123:');

// Session state — per-conversation, using a deterministic ID from a callback
const session = vcr.createSessionWithId(req.body.conversation_uuid);
const conversationState = new State(session);

// Instance state — shared across all replicas
const instanceState = vcr.getInstanceState();

// Account state — shared across all applications
const accountState = vcr.getAccountState();

import { vcr, State, EXPIRE_OPTION } from '@vonage/vcr-sdk';

const state = vcr.getInstanceState();

await state.set('counter', 0);
const value = await state.get('counter');       // 0

await state.increment('counter', 5);            // "5"
await state.decrement('counter', 2);            // "3"

await state.expire('counter', 3600);            // expires in 1 hour
await state.expire('counter', 600, EXPIRE_OPTION.LT); // only if < current TTL

await state.delete('counter');                  // "1"

// Store a user profile as a hash map
await state.mapSet('user:123', {
  name: 'Alice',
  email: 'alice@example.com',
  loginCount: '0',
});

const name = await state.mapGetValue('user:123', 'name');       // "Alice"
const profile = await state.mapGetAll('user:123');               // { name, email, loginCount }
const values = await state.mapGetValues('user:123');             // ["Alice", "alice@example.com", "0"]
const [email, login] = await state.mapGetMultiple('user:123', ['email', 'loginCount']);

await state.mapIncrement('user:123', 'loginCount', 1);          // "1"
const exists = await state.mapExists('user:123', 'name');       // "1"
const length = await state.mapLength('user:123');               // "3"

await state.mapDelete('user:123', ['email']);

let cursor = '0';

do {
  const [nextCursor, fields] = await state.mapScan('user:123', cursor, 'name*', 10);
  cursor = nextCursor;
  console.log(fields); // alternating [field, value, field, value, ...]
} while (cursor !== '0');

// Build an activity log
await state.listAppend('activity', { action: 'login', ts: Date.now() });
await state.listAppend('activity', { action: 'purchase', ts: Date.now() });
await state.listPrepend('activity', { action: 'signup', ts: Date.now() });

const length = await state.listLength('activity');          // "3"
const all = await state.listRange('activity');              // all items
const last10 = await state.listRange('activity', -10, -1); // last 10 items

// Keep only the most recent 100 entries
await state.listTrim('activity', -100, -1);

// Remove and process items
const [item] = await state.listStartPop('activity');
const [last] = await state.listEndPop('activity');

// Insert before a known value
await state.listInsert('activity', true, { action: 'login' }, { action: 'pre-login' });

// Get and update by position
const first = await state.listIndex('activity', 0);
await state.listSet('activity', 0, { action: 'updated', ts: Date.now() });

// Remove all occurrences of a specific value
await state.listRemove('activity', { action: 'login' }, 0);

await state.createIndex('users-index', {
  on: 'HASH',
  prefix: {
    count: 1,
    prefixes: ['user:'],
  },
  schema: [
    { fieldName: 'name', type: 'TEXT', sortable: true },
    { fieldName: 'email', type: 'TEXT' },
    { fieldName: 'loginCount', type: 'NUMERIC', sortable: true },
  ],
});

// Full-text search
const results = await state.search('users-index', '@name:Alice');

// With options
const results = await state.search('users-index', '@name:Alice', {
  limit: { offset: 0, num: 10 },
  sortBy: { field: 'loginCount', order: 'DESC' },
  withScores: true,
});

// Drop index only (keep the underlying data)
await state.dropIndex('users-index');

// Drop index and delete all indexed documents
await state.dropIndex('users-index', true);