Apache Pekko Documentation
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Release Notes (1.0.x)
Getting Started Guide
Introduction to Apache Pekko
Why modern systems need a new programming model
How the Actor Model Meets the Needs of Modern, Distributed Systems
Overview of Apache Pekko libraries and modules
Introduction to the Example
Part 1: Actor Architecture
Part 2: Creating the First Actor
Part 3: Working with Device Actors
Part 4: Working with Device Groups
Part 5: Querying Device Groups
General Concepts
Terminology, Concepts
Actor Systems
What is an Actor?
Supervision and Monitoring
Actor References, Paths and Addresses
Location Transparency
Apache Pekko and the Java Memory Model
Message Delivery Reliability
Configuration
Default configuration
Actors
Introduction to Actors
Actor lifecycle
Interaction Patterns
Handling responses in Scala 3
Fault Tolerance
Actor discovery
Routers
Stash
Behaviors as finite state machines
Coordinated Shutdown
Dispatchers
Mailboxes
Testing
Coexistence
Style guide
Learning Pekko Typed from Classic
Cluster
Cluster Usage
Cluster Specification
Cluster Membership Service
Phi Accrual Failure Detector
Distributed Data
Cluster Singleton
Cluster Sharding
Cluster Sharding concepts
Sharded Daemon Process
Multi-DC Cluster
Distributed Publish Subscribe in Cluster
Reliable delivery
Serialization
Serialization with Jackson
Multi JVM Testing
Multi Node Testing
Artery Remoting
Classic Remoting (Deprecated)
Split Brain Resolver
Coordination
Choosing Pekko Cluster
Persistence (Event Sourcing)
Event Sourcing
Replicated Event Sourcing
CQRS
Style Guide
Snapshotting
Testing
EventSourced behaviors as finite state machines
Schema Evolution for Event Sourced Actors
Apache Persistence Query
Persistence Query for LevelDB
Persistence Plugins
Persistence - Building a storage backend
Replicated Event Sourcing Examples
Persistence (Durable State)
Durable State
Style Guide
CQRS
Persistence Query
Streams
Module info
Introduction
Streams Quickstart Guide
Design Principles behind Apache Pekko Streams
Basics and working with Flows
Working with Graphs
Modularity, Composition and Hierarchy
Buffers and working with rate
Context Propagation
Dynamic stream handling
Custom stream processing
Futures interop
Actors interop
Reactive Streams Interop
Error Handling in Streams
Working with streaming IO
StreamRefs - Reactive Streams over the network
Pipelining and Parallelism
Testing streams
Substreams
Streams Cookbook
Configuration
Operators
Discovery
Module info
How it works
Discovery Method: DNS
Discovery Method: Configuration
Discovery Method: Aggregate multiple discovery methods
Migrating from Pekko Management Discovery (before 1.0.0)
Utilities
Event Stream
Logging
Circuit Breaker
Futures patterns
Extending Apache Pekko
Other Apache Pekko modules
Pekko HTTP
Pekko gRPC
Pekko Connectors
Pekko Kafka Connector
Pekko Projections
Cassandra Plugin for Pekko Persistence
JDBC Plugin for Pekko Persistence
R2DBC Plugin for Pekko Persistence
Apache Pekko Management
Package, Deploy and Run
Packaging
Operating a Cluster
Deploying
Rolling Updates
Project Information
Binary Compatibility Rules
Scala 3 support
Downstream upgrade strategy
Modules marked “May Change”
IDE Tips
Immutability using Lombok
Apache Pekko in OSGi
Rolling Updates and Versions
Issue Tracking
Licenses
License Report
Frequently Asked Questions
Books and Videos
Example projects
Project
Pekko Classic
Classic Actors
Classic Clustering
Classic Networking
Classic Utilities
Migration Guides
Migration from Akka to Apache Pekko
Migration from Apache Pekko 1.0.x to 1.1.x
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1.1.2+21-68d93f79*
Release Notes
Release Notes (1.1.x)
Release Notes (1.0.x)
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1.1.2+21-68d93f79*