# valyala/fasthttp

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23,264 stars · 1,817 forks · Go · mit

## Links

- GitHub: https://github.com/valyala/fasthttp
- awesome-repositories: https://awesome-repositories.com/repository/valyala-fasthttp.md

## Description

Fasthttp is a high-performance networking framework for Go, designed to maximize throughput and minimize memory overhead in demanding web applications. It functions as a specialized HTTP server and client library that prioritizes efficient resource management, allowing developers to build scalable services capable of handling massive concurrent traffic with minimal garbage collection pressure.

The library distinguishes itself through a focus on zero-allocation processing and low-level optimization. It achieves this by recycling temporary request and response objects through managed pools and utilizing unsafe memory pointers to perform data conversions without redundant allocations. To further enhance performance, the framework employs worker-per-core listener scaling, which distributes incoming network connections across multiple CPU cores to reduce processing latency under heavy load.

Beyond its core serving capabilities, the project provides a comprehensive suite of tools for managing network traffic and application state. This includes support for protocol upgrades like WebSockets, in-memory connection bypassing for inter-process communication, and robust request handling features such as automatic compression, static file delivery, and configurable timeouts. It also incorporates security-focused utilities, including context-aware template rendering and anti-denial-of-service limits, to maintain stability in production environments.

## Tags

### Web Development

- [HTTP Request Handling](https://awesome-repositories.com/f/web-development/backend-development/request-response-handling/http-request-handling.md) — Provides a high-performance handler for processing concurrent HTTP, HTTPS, and UNIX socket requests. ([source](https://pkg.go.dev/github.com/valyala/fasthttp))
- [High-Performance HTTP Servers](https://awesome-repositories.com/f/web-development/high-performance-http-servers.md) — Ships a zero-allocation HTTP server library optimized for maximum throughput and minimal garbage collection overhead.
- [Asynchronous Request Handlers](https://awesome-repositories.com/f/web-development/asynchronous-request-handlers.md) — Provides a high-concurrency request processing engine designed for performance-critical web applications.
- [Protocol Upgrades](https://awesome-repositories.com/f/web-development/protocol-upgrades.md) — Facilitates the transition of standard HTTP connections to persistent bidirectional communication channels. ([source](https://pkg.go.dev/net/http))
- [HTTP Handler Adapters](https://awesome-repositories.com/f/web-development/http-handler-adapters.md) — Adapts standard library request handlers for use within high-performance server environments. ([source](https://pkg.go.dev/github.com/valyala/fasthttp/fasthttpadaptor))
- [Response Compression](https://awesome-repositories.com/f/web-development/response-compression.md) — Reduces bandwidth usage by compressing network responses using Gzip, Deflate, or Brotli. ([source](https://pkg.go.dev/github.com/valyala/fasthttp))
- [Static Asset Management](https://awesome-repositories.com/f/web-development/web-infrastructure-deployment/asset-management-build-tools/asset-lifecycle-orchestration/static-asset-management.md) — Serves files from the local filesystem with automatic compression and optimized header management.
- [Static File Servers](https://awesome-repositories.com/f/web-development/web-infrastructure-deployment/web-server-capabilities/static-file-servers.md) — Delivers static files from the filesystem with automatic handling of MIME types and range requests. ([source](https://pkg.go.dev/github.com/valyala/fasthttp))
- [Query Parameter Parsers](https://awesome-repositories.com/f/web-development/query-parameter-parsers.md) — Parses and organizes URL-encoded query strings into structured key-value maps. ([source](https://pkg.go.dev/net/url))

### Networking & Communication

- [HTTP Clients](https://awesome-repositories.com/f/networking-communication/http-clients.md) — Manages reusable network clients with custom connection pooling, timeouts, and retry policies.
- [In-Memory Connection Bypassing](https://awesome-repositories.com/f/networking-communication/communication-protocols-architectures/communication-protocols-standards/network-protocols/connection-establishment-protocols/in-memory-connection-bypassing.md) — Bypasses the network stack to connect clients and servers within the same process for minimal latency. ([source](https://pkg.go.dev/github.com/valyala/fasthttp/fasthttputil))
- [HTTP Client Configurations](https://awesome-repositories.com/f/networking-communication/api-integration-frameworks/http-client-libraries/http-client-configurations.md) — Configures reusable clients with custom policies for redirects, timeouts, and connection pooling. ([source](https://pkg.go.dev/net/http))
- [Connection Establishment Protocols](https://awesome-repositories.com/f/networking-communication/communication-protocols-architectures/communication-protocols-standards/network-protocols/connection-establishment-protocols.md) — Provides mechanisms for upgrading standard HTTP connections to persistent protocols like WebSockets.
- [High-Concurrency Networking](https://awesome-repositories.com/f/networking-communication/high-concurrency-networking.md) — Distributes socket connections across multiple CPU cores to maximize throughput under heavy load. ([source](https://pkg.go.dev/github.com/valyala/fasthttp/reuseport))
- [Load Balancers](https://awesome-repositories.com/f/networking-communication/network-infrastructure-routing/network-proxying-tools/network-proxies/load-balancers.md) — Distributes incoming requests across multiple backend services or CPU cores to maximize throughput.
- [HTTP Transport Configurations](https://awesome-repositories.com/f/networking-communication/http-transport-configurations.md) — Provides utilities for customizing network transport behavior including connection pooling and request timeouts. ([source](https://pkg.go.dev/golang.org/x/net/http2))
- [WebSocket Connection Verifiers](https://awesome-repositories.com/f/networking-communication/network-reliability-diagnostics/network-diagnostics/websocket-connection-verifiers.md) — Allows handlers to take control of network connections after HTTP responses for custom protocol implementation. ([source](https://pkg.go.dev/github.com/valyala/fasthttp))
- [HTTP/2 Protocol Implementations](https://awesome-repositories.com/f/networking-communication/http-2-protocol-implementations.md) — Implements modern protocol features to improve performance and concurrency for network communication. ([source](https://pkg.go.dev/golang.org/x/net/http2))
- [Response Streaming](https://awesome-repositories.com/f/networking-communication/api-integration-frameworks/http-client-libraries/http-client-utilities/response-streaming.md) — Flushes buffered data to the client incrementally during request processing to provide real-time updates. ([source](https://pkg.go.dev/net/http))
- [In-Memory Network Bypasses](https://awesome-repositories.com/f/networking-communication/in-memory-network-bypasses.md) — Enables direct in-process communication between clients and servers to reduce network latency.
- [Load Balancers](https://awesome-repositories.com/f/networking-communication/load-balancers.md) — Distributes incoming requests among multiple backend clients using a least-loaded strategy. ([source](https://pkg.go.dev/github.com/valyala/fasthttp))

### Programming Languages & Runtimes

- [Networking Frameworks](https://awesome-repositories.com/f/programming-languages-runtimes/programming-language-varieties/programming-languages/language-specific-resources/systems-and-performance-languages/go-resources/networking-frameworks.md) — Provides a collection of low-level primitives for building scalable web servers and clients with optimized memory management.
- [Mutual Exclusion Locks](https://awesome-repositories.com/f/programming-languages-runtimes/language-features-paradigms/concurrency-models/concurrency/synchronization-primitives/mutual-exclusion-locks.md) — Uses mutual exclusion locks to ensure safe access to critical sections of code or data. ([source](https://pkg.go.dev/sync))
- [Task Schedulers](https://awesome-repositories.com/f/programming-languages-runtimes/language-features-paradigms/concurrency-models/concurrency/task-orchestration-frameworks/task-schedulers.md) — Implements task orchestration mechanisms to monitor and synchronize the completion of concurrent operations. ([source](https://pkg.go.dev/sync))

### Software Engineering & Architecture

- [Object Pooling](https://awesome-repositories.com/f/software-engineering-architecture/object-pooling.md) — Recycles temporary request and response objects through managed pools to minimize memory allocation and garbage collection pressure.
- [Zero-Copy Mechanisms](https://awesome-repositories.com/f/software-engineering-architecture/performance-reliability/performance-optimization/data-handling-throughput/zero-copy-mechanisms.md) — Transforms byte slices into strings using unsafe memory pointers to avoid redundant memory allocations.
- [Thread-Per-Core Architectures](https://awesome-repositories.com/f/software-engineering-architecture/performance-reliability/performance-optimization-patterns/thread-per-core-architectures.md) — Distributes incoming network connections across multiple CPU cores to maximize throughput and minimize latency.

### Operating Systems & Systems Programming

- [Zero-Allocation Conversions](https://awesome-repositories.com/f/operating-systems-systems-programming/kernel-core-internals/process-and-memory-management/memory-management/allocation-strategies/dynamic-memory-allocation/zero-allocation-conversions.md) — Performs byte-to-string conversions without memory allocations to minimize garbage collection pressure. ([source](https://cdn.jsdelivr.net/gh/valyala/fasthttp@master/README.md))

### Data & Databases

- [Concurrent Map Implementations](https://awesome-repositories.com/f/data-databases/key-value-pair-managers/concurrent-map-implementations.md) — Provides thread-safe key-value structures optimized for high-concurrency access. ([source](https://pkg.go.dev/sync))

### DevOps & Infrastructure

- [Graceful Shutdowns](https://awesome-repositories.com/f/devops-infrastructure/graceful-shutdowns.md) — Ensures clean termination by allowing active requests to complete before shutting down the server. ([source](https://pkg.go.dev/net/http))
- [Request Retries](https://awesome-repositories.com/f/devops-infrastructure/api-service-management/api-resilience/request-retries.md) — Automatically re-attempts failed network requests based on idempotency rules to improve reliability. ([source](https://pkg.go.dev/github.com/valyala/fasthttp))

### Security & Cryptography

- [Request Size Limiters](https://awesome-repositories.com/f/security-cryptography/request-size-limiters.md) — Protects server stability by capping concurrent connections, request sizes, and execution times. ([source](https://pkg.go.dev/github.com/valyala/fasthttp))
- [CSRF Protection](https://awesome-repositories.com/f/security-cryptography/csrf-protection.md) — Validates cross-origin requests by checking security headers or origin hostnames to block unauthorized actions. ([source](https://pkg.go.dev/net/http))

### System Administration & Monitoring

- [Request Timeouts](https://awesome-repositories.com/f/system-administration-monitoring/request-timeouts.md) — Enforces execution limits on request handlers to prevent resource exhaustion from hanging connections. ([source](https://pkg.go.dev/github.com/valyala/fasthttp))
- [Server Metrics](https://awesome-repositories.com/f/system-administration-monitoring/monitoring-and-observability/observability-platforms/metric-performance-monitors/server-metrics.md) — Exposes internal application metrics as JSON over HTTP for monitoring and observability. ([source](https://pkg.go.dev/github.com/valyala/fasthttp/expvarhandler))

### User Interface & Experience

- [HTML Template Renderers](https://awesome-repositories.com/f/user-interface-experience/layout-utilities/presentation-engines/template-engines/server-side-rendering-engines/html-template-renderers.md) — Parses and executes HTML templates with automatic contextual escaping to prevent injection attacks. ([source](https://pkg.go.dev/html/template))