rezilia

import { SmartCache, SmartLogger, retry } from 'rezilia';

// 1. Cache: 1000 concurrent calls collapse into exactly 1 database fetch
const cache = new SmartCache({ defaultTtl: 60_000 });
const user = await cache.get('user:42', () => db.findUser(42));

// 2. Logger: Context & requestId auto-propagate across all async boundaries
const logger = new SmartLogger({ serviceName: 'payment-service' });
logger.runWithContext({ requestId: req.id }, async () => {
  logger.info('Processing transaction'); // contains requestId automatically!
});

// 3. Retry: Exponential backoff + Circuit breaker protection
const data = await retry(() => paymentGateway.charge(order), {
  attempts: 4,
  timeout: 5_000,
  circuitBreaker: { threshold: 5, resetAfter: 30_000 }
});

<script src="https://cdn.jsdelivr.net/npm/rezilia/dist/browser/rezilia.min.js"></script>
<script>
  const { SmartRetry, SmartCache, BrowserLogger } = window.rezilia;

  // Structured logging — no bundler required
  const logger = new BrowserLogger({ service: 'landing-page', pretty: true });
  logger.setContext({ userId: 'u_42' });

  // Retry with exponential backoff + circuit breaker
  const retry = new SmartRetry({ attempts: 3, baseDelay: 500 });

  // Singleflight cache — dedupes concurrent fetches, in-memory
  const cache = new SmartCache({ defaultTtl: 60_000 });

  async function loadUser() {
    logger.info('Fetching user profile');
    const user = await cache.get('user:42', () =>
      retry.execute(() => fetch('/api/user/42').then(r => r.json()))
    );
    logger.info('User loaded', { user });
  }

  loadUser();
</script>

import { SmartLogger } from 'rezilia/logger';

const logger = new SmartLogger({ serviceName: 'billing-api' });

// Context flows automatically into every nested function call
logger.runWithContext({ requestId: 'req_981a', userId: 'usr_42' }, async () => {
  logger.info('Initiating payment');
  await chargeCustomer();
  logger.info('Charge complete'); 
});

// Automatic Secret Redaction
logger.info('User auth', { apiKey: 'sk_live_990182', password: 'hunter2' });
// Output: { "apiKey": "[REDACTED]", "password": "[REDACTED]" }

import { BrowserLogger } from 'rezilia/browser'; // or window.rezilia via CDN

const logger = new BrowserLogger({
  service: 'checkout-widget',
  pretty: true,          // human-readable console output (default: JSON)
  timeFormat: 'time',  // 'iso' | 'full' | 'time'
});

// Context merges into every subsequent log call
logger.setContext({ requestId: 'req_981a', userId: 'u_42' });

logger.debug('Widget mounted');
logger.info('Fetching cart', { cartId: 'cart_77' });
logger.warn('Coupon expired', { code: 'SAVE10' });

// Automatic secret redaction — sensitive keys become '***'
logger.info('User authenticated', { token: 'sk_live_990182', password: 'hunter2' });
// → { ..., "token": "***", "password": "***" }

logger.error('Payment failed', { reason: 'card_declined' });

import { SmartCache }  from 'rezilia/cache';   // Cache only
import { SmartLogger } from 'rezilia/logger';  // Logger only
import { retry }       from 'rezilia/retry';   // Retry only
import { SmartCache, SmartLogger, retry } from 'rezilia'; // All utilities

// CommonJS is fully supported
const { SmartCache } = require('rezilia/cache');