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// -------------------------------------------------------------------------------------------------
// Copyright (C) 2015-2026 Nautech Systems Pty Ltd. All rights reserved.
// https://nautechsystems.io
//
// Licensed under the GNU Lesser General Public License Version 3.0 (the "License");
// You may not use this file except in compliance with the License.
// You may obtain a copy of the License at https://www.gnu.org/licenses/lgpl-3.0.en.html
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// -------------------------------------------------------------------------------------------------
//! Database and messaging infrastructure for [NautilusTrader](https://nautilustrader.io).
//!
//! The `nautilus-infrastructure` crate provides backend database implementations and message bus adapters
//! that enable NautilusTrader to scale from development to production deployments. This includes
//! enterprise-grade data persistence and messaging capabilities:
//!
//! - **Redis integration**: Cache database and message bus implementations using Redis.
//! - **PostgreSQL integration**: SQL-based cache database with full data models.
//! - **Connection management**: Connection handling with retry logic and health monitoring.
//! - **Serialization options**: Support for JSON and MessagePack encoding formats.
//! - **Python bindings**: PyO3 integration for Python interoperability.
//!
//! The crate supports multiple database backends through feature flags, allowing users to choose
//! the appropriate infrastructure components for their specific deployment requirements and scale.
//!
//! # NautilusTrader
//!
//! [NautilusTrader](https://nautilustrader.io) is an open-source, production-grade, Rust-native
//! engine for multi-asset, multi-venue trading systems.
//!
//! The system spans research, deterministic simulation, and live execution within a single
//! event-driven architecture, providing research-to-live semantic parity.
//!
//! # Feature Flags
//!
//! This crate provides feature flags to control source code inclusion during compilation,
//! depending on the intended use case, i.e. whether to provide Python bindings
//! for the [nautilus_trader](https://pypi.org/project/nautilus_trader) Python package,
//! or as part of a Rust only build.
//!
//! - `python`: Enables Python bindings from [PyO3](https://pyo3.rs).
//! - `redis`: Enables the Redis cache database and message bus backing implementations.
//! - `postgres`: Enables the PostgreSQL SQLx models and cache database backend.
//! - `extension-module`: Builds the crate as a Python extension module.