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Infrastructure

This page covers supporting infrastructure and external services that power Decentraland.

External Services (SaaS)

LiveKit

Purpose: High-quality media server for voice and video

LiveKit provides:

  • WebRTC media routing
  • Voice chat
  • Video conferencing
  • Screen sharing
  • Spatial audio (in development)

Access Control: Comms Gatekeeper generates time-limited tokens

Used By:

  • Archipelago Workers - Default voice
  • Worlds - Per-world voice channels
  • Events - Event-specific channels

SendGrid

Purpose: Email delivery service

Sends notification emails:

  • Friend requests
  • Event reminders
  • System notifications

Triggered By: Notifications system

Blockchain Indexers

Multiple indexing services provide fast blockchain queries:

Squids

Purpose: Custom blockchain indexer

Subsquid based indexers:

  • Custom data models
  • Fast sync times
  • GraphQL API

Indexes:

  • Land parcels (LAND NFTs)
  • Wearables and collections
  • Marketplace activity
  • ENS names

Satsuma

Purpose: Hosted GraphQL provider

Managed subgraph hosting:

  • High availability
  • Auto-scaling
  • Monitoring included

The Graph

Purpose: Decentralized indexing protocol

The Graph network:

  • Decentralized indexers
  • Query fees in GRT
  • Community-operated

Message Broker

NATS

Purpose: Pub/sub message routing

NATS provides:

  • Real-time message delivery
  • Pub/sub patterns
  • Request/reply patterns
  • Clustering support

Used By:

Service Purpose
Archipelago Position updates
Social Service Friend status
Worlds World events

Media Processing

Image Conversion Service (Metamorph)

Purpose: Image format conversion and optimization

Converts images between formats:

  • WebP optimization
  • Thumbnail generation
  • Format conversion

GitHub: metamorph

Profile Images System

Purpose: Avatar thumbnail generation

Generates avatar preview images:

  • Face shots
  • Full body shots
  • Multiple resolutions

Components:

  • Profile Images Consumer - Renders avatars
  • Profile Producer - Listens for avatar changes

Asset Processing Workers

Asset Bundle Converter

Purpose: Platform-specific asset optimization

Converts deployed assets to optimized bundles for all platforms.

Registers bundles in: Asset Bundle Registry

LODs Generator

Purpose: Level of detail variants

Generates lower-poly versions of 3D models for better performance.

Rewards System

Rewards API

Purpose: NFT reward distribution

Grants NFT rewards for actions:

  • Onboarding completion
  • Event participation
  • Referrals

Next Steps