redis/hiredis
Hiredis
Hiredis is a minimalistic C client library designed to send commands and receive responses from Redis servers using a binary-safe protocol. It functions as a core toolkit providing a Redis protocol parser, a secure connector, and both synchronous and asynchronous driver interfaces.
The library distinguishes itself through a decoupled protocol parser that converts raw byte streams into structured data objects independently of the network transport layer. It supports high-performance pipelining to batch multiple commands into a single network round-trip and provides a secure networking layer for encrypted communication via SSL/TLS.
The project covers broad capability areas including connection lifecycle management, cross-platform socket compatibility, and event-driven asynchronous command execution. It also includes low-level data handling primitives such as dynamic string management and in-memory hash table management.
Custom memory management is supported through compile-time macro redefinitions that allow the default allocator to be replaced with a custom implementation.
Features
- Redis - Provides a minimalistic C client library for establishing and managing connections to Redis servers.
- Redis Clients - Provides a minimalistic C client library for connecting to and interacting with Redis data stores.
- Asynchronous Database Command Execution - Provides non-blocking execution of Redis commands to prevent the main application thread from stalling.
- Redis Drivers - Provides a non-blocking driver optimized for the Redis protocol and asynchronous command execution.
- Redis Protocol Parsers - Provides a decoupled parser that transforms raw bytes from a Redis server into structured objects.
- C Libraries - Ships as a portable software library written in C for direct binary linking into applications.
- Protocol-Transport Decoupling Layers - Decouples protocol parsing logic from the network transport layer, allowing independent processing of byte streams.
- Redis Protocol Parsing - Includes a decoupled protocol parser that converts raw Redis byte streams into structured data objects.
- Event-Driven Callbacks - Uses event-driven callbacks to notify the application when Redis responses or push messages arrive.
- Synchronous Command Execution - Implements blocking command execution that waits for a server response before returning control.
- Database Response Callbacks - Uses an event-driven callback system to handle responses from the Redis server asynchronously.
- Command Pipelining - Implements command pipelining to batch multiple requests into a single network round-trip for higher throughput.
- Pipelining Tools - Implements a mechanism for batching multiple Redis commands into a single network round-trip.
- Secure Connectors - Provides a secure networking layer for encrypting communication between the client and Redis server.
- Command Pipelining - Implements high-performance pipelining to batch multiple Redis commands and reduce network latency.
- Push Message Callbacks - Supports registered callbacks to process spontaneous push messages sent by the Redis server.
- Stream Buffering Pipelines - Provides internal buffering mechanisms to batch multiple commands and reduce network round-trips.
- Network Traffic Optimization - Implements network traffic optimization using TCP no-delay and keep-alive settings to improve connection stability.
- Synchronous Blocking I/O - Provides synchronous command execution that waits for the server response before returning control.
- Database Connection Encryption - Provides a secure networking layer for encrypting Redis communication via SSL/TLS and certificate verification.
- SSL/TLS Connection Security - Establishes encrypted communication channels between the C application and Redis server using SSL/TLS.
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- Windows Environments - Listed in the “Windows Environments” section of the Awesome C awesome list.
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