Question 1

How does Quill compare to spdlog in performance?

Accepted Answer

Quill consistently outperforms spdlog in latency benchmarks, with nanosecond-level times versus spdlog's microsecond-level, especially in multi-threaded logging. However, spdlog might be easier for basic setups due to its simpler synchronous options.

Question 2

How to set up Quill with CMake in my project?

Accepted Answer

You can install Quill via package managers like vcpkg or use embedded CMake by adding it as a subdirectory. The README provides sample CMakeLists.txt files for both external and embedded builds, linking with quill::quill target.

Question 3

Does Quill support logging complex types like vectors?

Accepted Answer

Yes, Quill supports logging STL containers like std::vector<std::string> through its type-safe API built on {fmt}. Benchmarks show it handles such types efficiently, with bounded dropping queue mode performing well in multi-threaded scenarios.

Question 4

What are the queue modes in Quill and when to use them?

Accepted Answer

Quill offers configurable queue modes: bounded or unbounded, and blocking or dropping. Bounded dropping queues are ideal for preventing memory overflow in high-load scenarios, while unbounded queues avoid message loss but use more memory.

Question 5

Can I use Quill without macros for logging?

Accepted Answer

Yes, Quill offers a macro-free mode using log functions, but the README notes this has performance trade-offs, with higher latency (e.g., 27ns vs 8ns in benchmarks) due to additional runtime overhead compared to the macro-based API.

Question 6

How does Quill handle application crashes?

Accepted Answer

Quill includes a built-in signal handler to preserve logs during crashes, ensuring that pending messages are flushed before termination. This is part of its reliability focus for production environments.

Question 7

Is Quill good for Android NDK development?

Accepted Answer

Yes, Quill supports Android via an AndroidSink that integrates with the system logging, and it can be built with the NDK. The README recommends using quill::ClockSourceType::System for timestamps and provides a minimal example.

Quill

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