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

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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

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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

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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

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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.

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Rewards System

Rewards API

Purpose: NFT reward distribution

Grants NFT rewards for actions:

• Onboarding completion

• Event participation

• Referrals

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Next Steps

• Review Backend Services for service specifications

• Check Catalyst Network for content infrastructure

• See Architecture Overview for the complete picture