---
title: "The concepts of AxoSyslog"
url: "https://axoflow.com/docs/axosyslog-core/4.28/chapter-concepts/"
description: "How AxoSyslog works: message structure and representation, value-pairs, global objects, modes of operation, timezones, and high availability."
last_modified: "2026-09-23T14:21:26+02:00"
---

> For the complete documentation index, see [llms.txt](https://axoflow.com/docs/axosyslog-core/4.28/llms.txt).

# The concepts of AxoSyslog

How AxoSyslog works: message structure and representation, value-pairs, global objects, modes of operation, timezones, and high availability.

This chapter discusses the technical concepts of AxoSyslog.

---

[The philosophy of AxoSyslog](https://axoflow.com/docs/axosyslog-core/4.28/chapter-concepts/syslog-ng-philosophy/index.md)

[Logging with AxoSyslog](https://axoflow.com/docs/axosyslog-core/4.28/chapter-concepts/concepts-logging-with-syslog-ng/index.md)

[Modes of operation](https://axoflow.com/docs/axosyslog-core/4.28/chapter-concepts/concepts-modes-of-operation/index.md)

[Global objects](https://axoflow.com/docs/axosyslog-core/4.28/chapter-concepts/msgroute/index.md)

[Timezones and daylight saving](https://axoflow.com/docs/axosyslog-core/4.28/chapter-concepts/timezone-handling/index.md)

[Product licensing](https://axoflow.com/docs/axosyslog-core/4.28/chapter-concepts/concepts-licensing/index.md)

[High availability support](https://axoflow.com/docs/axosyslog-core/4.28/chapter-concepts/concepts-high-availability/index.md)

[The structure of a log message](https://axoflow.com/docs/axosyslog-core/4.28/chapter-concepts/concepts-message-structure/index.md)

[Message representation in AxoSyslog](https://axoflow.com/docs/axosyslog-core/4.28/chapter-concepts/concepts-message-representation/index.md)

[Structuring macros, metadata, and other value-pairs](https://axoflow.com/docs/axosyslog-core/4.28/chapter-concepts/concepts-value-pairs/index.md)

[Things to consider when forwarding messages between AxoSyslog hosts](https://axoflow.com/docs/axosyslog-core/4.28/chapter-concepts/concepts-things-to-consider/index.md)

Last modified September 23, 2026: [Adds frontmatter descriptions to top-level sections (a27cc77e)](https://github.com/axoflow/axosyslog-core-docs/commit/a27cc77e261c9a82032e3bd5eb4bb12b6cd51118)