Visual Library

Every system,
on one canvas.

The concepts behind real backends — each one a clean, zoomable diagram with an explanation and a downloadable SVG.

AllCachingMessagingAuthNetworkingDatabasesPatterns
ClientCacheDB Caching
Caching

Cache-aside & write-through

How reads and writes flow around a cache.
ProducerBrokerConsumer Messaging
Messaging

Kafka partitions & offsets

Consumer groups and ordered logs.
UserAuth ServerResource Auth
Auth

OAuth 2.0 flow

Authorization code & token exchange.
ClientLBS1S2 Networking
Networking

Load balancer strategies

Round-robin, least-connections, hashing.
EdgeCDNOrigin Networking
Networking

CDN & edge caching

How static assets reach users fast.
PrimaryReplicaReplica Databases
Databases

Replication & read scaling

Primary-replica, lag and failover.
KeyRingNode Databases
Databases

Consistent hashing

Sharding that survives adding nodes.
CmdWrite DBRead DB Patterns
Patterns

CQRS

Split read and write models.
OrderPaymentShip Patterns
Patterns

SAGA pattern

Distributed transactions & compensation.
ClientGatewayGETPOST API
API

API design & idempotency

Verbs, versioning and safe retries.
CAP Fundamentals
Fundamentals

System design trade-offs

CAP, PACELC and latency vs consistency.
GatewaySvc ASvc BSvc C Patterns
Patterns

Microservices

Bounded contexts & the distribution tax.
ClientDNSTLSHTTP Networking
Networking

Networking fundamentals

DNS, TCP, TLS and HTTP round trips.
QueryPlannerIndexHeap Databases
Databases

Indexes, transactions & scale

B-trees, isolation levels and sharding.
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