system-design Examples and Free Source Code

Why does a cache use the most-recently-used (MRU) algorithm as the evict policy?...

algorithm caching system-design

Where should roles and missions/ACLs be managed when building an authorization server?...

spring-security authorization system-design spring-authorization-server

Is data in write through cache reverted in case of transaction failure?...

database caching architecture system-design caching-strategy

How do I limit the count of rows in a result set in Postgres without unnecessary locking?...

postgresql distributed-system system-design

Handling Multi-Table Updates in Kafka...

apache-kafka design-patterns architecture system-design

Discord Bot and a website communication, what should be the system design...

discord architecture message-queue system-design

Hashing and encoding sequence...

algorithm encoding hash system-design

Is using a local database as the Single Source of Truth (SSOT) ideal for real-time collaboration and...

android websocket android-room system-design

How does file convertors work in general like word to pdf, XML to json, word to txt etc...

algorithm architecture file-conversion object-oriented-analysis system-design

System design: Strategies for dealing with heavy writes to a DB...

architecture scalability system-design

Why are locks said to violate the principles of abstraction and composability?...

abstraction locks system-design

Cassandra/Scylla Counters; What's the most common approach to tracking the count for emoji react...

database cassandra system-design scylla

Sharding a RDBMS (SQL) database...

sql database nosql sharding system-design

Fargate task-level SNS topic subscriptions...

amazon-sns aws-fargate system-design

Is my understanding of a Distributed Lock correct?...

distributed-system system-design distributed-lock

What happens when B-trees database have data larger than its page size?...

database system-design

What happens if append-only database crash during append?...

database system-design

Handle 100K request per second...

performance server architecture system-design

Implement sharing in a privacy-first document management system...

encryption database-design privacy system-design data-security

why they use http in apis (mobile / desktop / web / ...) , isn't http just for web...

performance http network-programming tcp system-design

System design - Server sends request but goes down, does it receive response...

failover system-design

How failures and restore operations in sharding (consistent hashing)...

sharding database-partitioning system-design consistent-hashing

how can i calculate mutual friends/followers efficiently?...

mysql database database-design typeorm system-design

Creating a simple Non repudiation/fraud proof system...

c#database-design system-design

Kafka streams in hexagonal architecture...

java apache-kafka apache-kafka-streams system-design hexagonal-architecture

Should you use the Command Pattern for requests involving very little logic?...

java design-patterns refactoring system-design command-pattern

AWS SES Configurations Across Environments...

amazon-web-services amazon-ses system-design

Is This A Working, Performant Method for the Actual Matching of Elasticsearch Docs in an Index with ...

elasticsearch geolocation gis system-design s2

Design architecture for integrating with a 3rd party payment provider...

azure architecture azure-functions azure-servicebus-queues system-design

Django celery error while adding tasks to RabbitMQ message queue : AttributeError: 'ChannelPromi...

python django rabbitmq celery system-design