C++ Actor Framework VS libevent

Compare C++ Actor Framework vs libevent and see what are their differences.

C++ Actor Framework

An Open Source Implementation of the Actor Model in C++ (by actor-framework)
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C++ Actor Framework libevent
4 12
3,074 10,648
0.7% 1.3%
9.8 8.7
6 days ago 7 days ago
C++ C
BSD 3-clause "New" or "Revised" License GNU General Public License v3.0 or later
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

C++ Actor Framework

Posts with mentions or reviews of C++ Actor Framework. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-07-04.
  • C++ Jobs - Q3 2023
    3 projects | /r/cpp | 4 Jul 2023
    CAF
  • Actor system for the JVM developed by Electronic Arts
    6 projects | news.ycombinator.com | 28 Apr 2022
    I'd like to mention the native actor model implementation CAF, the C++ Actor Framework, and share some experiences. (Disclaimer: I've been developing on CAF in the past and have a good relationship with the creator.) CAF (1) provides native actors without an VM layer, (2) type-safe interfaces so that the compiler yells at you when a receiver cannot handle a message, and (3) transparent copy-on-write messaging so that you can still push stuff through pipelines and induce only copies only when a ref count is greater than one.

    In our telemetry engine VAST, we've been using CAF successfully for several years for building a distributed system that always has a saturated write path. CAF provides a credit-based streaming abstraction as well, so that you can have backpressure across a chain of actors, making burst-induced OOM issues a blast from the past. You also get all the other benefits of actors, like linking and monitoring, to achieve well-defined failure semantics: either be up and running or collectively fail, but still allowing for local recovery—except for segfaults, this is where "native" has a disadvantage over VM-based actor models.

    With CAF's network transparent runtime, a message ender doesn't need to know where receiver lives; the runtime either passes the message as COW pointer to the receiver or serializes it transparently. Other actor model runtimes support that as well, but I'm mentioning it because our experience showed that this is great value: we can can slice and dice our actors based on the deployment target, e.g., execute the application in one single process (e.g., for a beefy box) or wrap actors into single OS processes (e.g., when deploying on container auto-scalers).

    The deep integration with the C++ type system allowed us to define very stable RPC-like interfaces. We're currently designing a pub/sub layer as alternate access path, because users are interested in tapping into streaming feeds selectively. This is not easy, because request-response and pub/sub are two ends of a spectrum, but it turns out we can support nicely with CAF.

    Resources:

    - CAF: https://github.com/actor-framework/actor-framework

    - VAST: https://tenzir.github.io/vast/docs/understand-vast/actor-mod... (sorry for the incompleteness, we're in migration mode from the old docs, but this page is summarizing the benefits of CAF for us best)

    - Good general actor model background: http://dist-prog-book.com/chapter/3/message-passing.html#why...

  • C++ Jobs - Q2 2022
    4 projects | /r/cpp | 3 Apr 2022
    VAST is a flight recorder and security content execution engine. On the one hand, there exists a continuous stream of high-volume data sources (such as network telemetry as NetFlow, Zeek, Suricata, and endpoint telemetry). On the other hand, VAST processes needle-in-haystack queries to provide answers to questions like "has this threat been relevant to us 8 months ago?", and supports threat hunters with an interactive query capability to explore the data. From an engineering perspective, we focus especially on the separation of read and write path, concurrent message passing in an actor model runtime (CAF), and leveraging open standards, like Apache Arrow, to establish a high-bandwidth data plane for sharing data with downstream tooling. A flexible plugin API enables additional security-specific use cases on top, such as realtime matching of threat intelligence or mining of asset data for passive inventorization.
  • C++ Jobs - Q4 2021
    4 projects | /r/cpp | 2 Oct 2021
    Technologies: Apache Arrow, Flatbuffers, C++ Actor Framework, Linux, Docker, Kubernetes

libevent

Posts with mentions or reviews of libevent. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-01-11.
  • Epoll: The API that powers the modern internet (2022)
    7 projects | news.ycombinator.com | 11 Jan 2024
  • Concurrency Model in JavaScript Runtime Environments
    7 projects | dev.to | 3 Sep 2022
  • Understand the underlying Javascript - event loop
    2 projects | /r/javascript | 27 Aug 2022
    They're different. Node uses libuv while chromium uses libevent. You're also seeing different APIs for working with the event loop like nextTick() in Node that doesn't exist in browsers.
  • Tmux install script I made to install the latest stable version
    3 projects | /r/tmux | 1 Mar 2022
    Unknown OS, continue trying to install? Menu? Develope this area! Querying Versions on https://libevent.org... Please be patient.
  • Looking for low footprint c++ library to build a REST client
    2 projects | /r/cpp | 23 Dec 2021
  • Io_uring is not an event system
    6 projects | news.ycombinator.com | 17 Jun 2021
  • Packaging your Crystal app into a Flatpak
    10 projects | dev.to | 23 May 2021
    app-id: dev.geopjr.Hashbrown runtime: org.gnome.Platform runtime-version: "3.38" sdk: org.gnome.Sdk command: hashbrown finish-args: - --socket=wayland - --socket=fallback-x11 - --share=ipc cleanup: - /include - /lib/pkgconfig - /share/doc - /share/man - "*.a" - "*.la" modules: - name: libevent sources: - type: git url: https://github.com/libevent/libevent.git tag: release-2.1.12-stable - name: hashbrown buildsystem: simple build-commands: - $(pwd)/crystal/bin/crystal build ./src/hashbrown.cr --no-debug --release - install -D -m 0755 hashbrown /app/bin/hashbrown - install -D -m 0644 extra/Hashbrown.desktop /app/share/applications/dev.geopjr.Hashbrown.desktop - install -D -m 0644 extra/icons/logo.svg /app/share/icons/hicolor/scalable/apps/dev.geopjr.Hashbrown.svg - install -D -m 0644 extra/icons/symbolic.svg /app/share/icons/hicolor/symbolic/apps/dev.geopjr.Hashbrown-symbolic.svg post-install: - install -D -m 0644 extra/dev.geopjr.Hashbrown.metainfo.xml /app/share/metainfo/dev.geopjr.Hashbrown.metainfo.xml sources: - type: git url: https://github.com/GeopJr/Hashbrown.git tag: v1.2.0 commit: 02ecf5cc5aacc32fc484fd9e348d2b1220168295 - type: archive dest: crystal/ url: https://github.com/crystal-lang/crystal/releases/download/1.0.0/crystal-1.0.0-1-linux-x86_64.tar.gz sha256: 00211ca77758e99210ec40b8c5517b086d2ff9909e089400f6d847a95e5689a4 - type: git url: https://github.com/jhass/crystal-gobject.git commit: 6468c57f8aa54b71c766d27b1e59e87a09ee8552 dest: lib/gobject - type: git url: https://github.com/elorest/compiled_license.git tag: v0.1.3 commit: f287c2c8c95579688fa5620df954d8cc1272cbbf dest: lib/compiled_license
  • C Deep
    80 projects | dev.to | 27 Feb 2021
    libevent - Event loop replacement for network servers. BSD-3-Clause

What are some alternatives?

When comparing C++ Actor Framework and libevent you can also consider the following projects:

libuv - Cross-platform asynchronous I/O

Boost.Asio - Asio C++ Library

libev - Full-featured high-performance event loop loosely modelled after libevent

liburing

Taskflow - A General-purpose Parallel and Heterogeneous Task Programming System

rotor - Event loop friendly C++ actor micro-framework, supervisable

uvw - Header-only, event based, tiny and easy to use libuv wrapper in modern C++ - now available as also shared/static library!

NCCL - Optimized primitives for collective multi-GPU communication

Dasynq - Thread-safe cross-platform event loop library in C++