Apache Pekko Documentation Source.lazily
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    apache/incubator-pekko
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    • Security Announcements
      • Receiving Security Advisories
      • Reporting Vulnerabilities
      • Security Related Documentation
    • Release Notes
      • 1.0.0
    • 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
      • 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
      • 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
      • Migration Guides
      • 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
    • Source.lazily
      • Signature
      • Description
      • Reactive Streams semantics
    • link Apache Software Foundation
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    • link Security
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    • link Events
    • link Donate
    • link Thanks
    • Source.lazily
      • Signature
      • Description
      • Reactive Streams semantics

    Source.lazily

    Deprecated by Source.lazySource.

    Source operators

    Signature

    Source.lazilySource.lazily

    Description

    lazily is deprecated, please use lazySource instead.

    Defers creation and materialization of a Source until there is demand.

    Reactive Streams semantics

    emits depends on the wrapped Source

    completes depends on the wrapped Source

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    Apache Incubator logo

    Apache Pekko is an effort undergoing incubation at The Apache Software Foundation (ASF), sponsored by the Apache Incubator. Incubation is required of all newly accepted projects until a further review indicates that the infrastructure, communications, and decision making process have stabilized in a manner consistent with other successful ASF projects. While incubation status is not necessarily a reflection of the completeness or stability of the code, it does indicate that the project has yet to be fully endorsed by the ASF.

    Copyright © 2011-2022 Lightbend, Inc. Apache Pekko, Pekko, and its feather logo are trademarks of The Apache Software Foundation.