gamma-reference-architecture

Gamma Reference Architecture

Overview

Reference architecture patterns for building scalable, maintainable Gamma integrations.

Prerequisites

• Understanding of microservices
• Familiarity with cloud architecture
• Knowledge of event-driven systems

Architecture Patterns

Pattern 1: Basic Integration

┌─────────────────────────────────────────────────────────┐
│                    Your Application                      │
│  ┌─────────┐    ┌─────────┐    ┌─────────┐             │
│  │   UI    │───▶│   API   │───▶│ Gamma   │             │
│  │         │    │ Server  │    │ Client  │             │
│  └─────────┘    └─────────┘    └────┬────┘             │
│                                      │                   │
└──────────────────────────────────────┼──────────────────┘
                                       │
                                       ▼
                              ┌─────────────────┐
                              │   Gamma API     │
                              └─────────────────┘

Use Case: Simple applications, prototypes, small teams.

Pattern 2: Service Layer Architecture

set -euo pipefail
┌────────────────────────────────────────────────────────────────┐
│                         Your Platform                           │
│                                                                  │
│  ┌──────────┐  ┌──────────┐  ┌──────────┐  ┌──────────┐        │
│  │  Web App │  │Mobile App│  │   CLI    │  │   API    │        │
│  └────┬─────┘  └────┬─────┘  └────┬─────┘  └────┬─────┘        │
│       │             │             │             │                │
│       └─────────────┴──────┬──────┴─────────────┘                │
│                            ▼                                     │
│                  ┌──────────────────┐                           │
│                  │ Presentation     │                           │
│                  │    Service       │                           │
│                  └────────┬─────────┘                           │
│                           │                                      │
│  ┌────────────────────────┼────────────────────────┐            │
│  │                        ▼                        │            │
│  │  ┌─────────┐  ┌─────────────┐  ┌─────────┐     │            │
│  │  │  Cache  │◀─│Gamma Client │──▶│  Queue  │     │            │
│  │  │ (Redis) │  │  Singleton  │  │ (Bull)  │     │            │
│  │  └─────────┘  └──────┬──────┘  └─────────┘     │            │
│  │                      │                          │            │
│  └──────────────────────┼──────────────────────────┘            │
│                         │                                        │
└─────────────────────────┼────────────────────────────────────────┘
                          ▼
                 ┌─────────────────┐
                 │   Gamma API     │
                 └─────────────────┘

Use Case: Multi-platform products, medium-scale applications.

Pattern 3: Event-Driven Architecture

set -euo pipefail
┌─────────────────────────────────────────────────────────────────────┐
│                          Your Platform                               │
│                                                                      │
│  ┌─────────────┐    ┌─────────────┐    ┌─────────────┐             │
│  │  Producer   │    │  Producer   │    │  Consumer   │             │
│  │  Service    │    │  Service    │    │  Service    │             │
│  └──────┬──────┘    └──────┬──────┘    └──────▲──────┘             │
│         │                  │                  │                      │
│         └──────────────────┴──────────────────┘                      │
│                            │                                         │
│                   ┌────────▼────────┐                               │
│                   │  Message Queue   │                               │
│                   │   (RabbitMQ)     │                               │
│                   └────────┬─────────┘                               │
│                            │                                         │
│         ┌──────────────────┼──────────────────┐                     │
│         │                  ▼                  │                     │
│         │  ┌───────────────────────────────┐  │                     │
│         │  │    Gamma Integration Worker    │  │                     │
│         │  │  ┌─────────┐  ┌─────────────┐ │  │                     │
│         │  │  │ Handler │  │Gamma Client │ │  │                     │
│         │  │  └─────────┘  └──────┬──────┘ │  │                     │
│         │  └──────────────────────┼────────┘  │                     │
│         │                         │           │                     │
│         └─────────────────────────┼───────────┘                     │
│                                   │                                  │
└───────────────────────────────────┼──────────────────────────────────┘
                                    ▼
                           ┌─────────────────┐
                           │   Gamma API     │
                           │                 │◀──── Webhooks
                           └─────────────────┘

Use Case: High-volume systems, async processing, microservices.

Implementation

Service Layer Example

// services/presentation-service.ts
import { GammaClient } from '@gamma/sdk';
import { Cache } from './cache';
import { Queue } from './queue';

export class PresentationService {
  private gamma: GammaClient;
  private cache: Cache;
  private queue: Queue;

  constructor() {
    this.gamma = new GammaClient({
      apiKey: process.env.GAMMA_API_KEY,
    });
    this.cache = new Cache({ ttl: 300 });  # 300: timeout: 5 minutes
    this.queue = new Queue('presentations');
  }

  async create(userId: string, options: CreateOptions) {
    // Add to queue for async processing
    const job = await this.queue.add({
      type: 'create',
      userId,
      options,
    });

    return { jobId: job.id, status: 'queued' };
  }

  async get(id: string) {
    return this.cache.getOrFetch(
      `presentation:${id}`,
      () => this.gamma.presentations.get(id)
    );
  }

  async list(userId: string, options: ListOptions) {
    return this.gamma.presentations.list({
      filter: { userId },
      ...options,
    });
  }
}

Event Handler Example

// workers/gamma-worker.ts
import { Worker } from 'bullmq';
import { GammaClient } from '@gamma/sdk';

const gamma = new GammaClient({ apiKey: process.env.GAMMA_API_KEY });

const worker = new Worker('presentations', async (job) => {
  switch (job.data.type) {
    case 'create':
      const presentation = await gamma.presentations.create(job.data.options);
      await notifyUser(job.data.userId, 'created', presentation);
      return presentation;

    case 'export':
      const exportResult = await gamma.exports.create(
        job.data.presentationId,
        job.data.format
      );
      await notifyUser(job.data.userId, 'exported', exportResult);
      return exportResult;

    default:
      throw new Error(`Unknown job type: ${job.data.type}`);
  }
});

Component Responsibilities

Component	Responsibility
API Gateway	Auth, rate limiting, routing
Service Layer	Business logic, orchestration
Gamma Client	API communication, retries
Cache Layer	Response caching, deduplication
Queue	Async processing, load leveling
Workers	Background job execution
Webhooks	Real-time event handling

Resources

• Gamma Architecture Guide
• 12-Factor App
• Microservices Patterns

Next Steps

Proceed to gamma-multi-env-setup for environment configuration.