Golang zap

Package zap contains helpers for setting up a new logr.

Package zapcore defines and implements the low-level interfaces upon which zap is built. By providing alternate implementations of these interfaces, external packages can extend zap's capabilities. DefaultLineEnding defines the default line ending when writing logs. Alternate line endings specified in EncoderConfig can override this behavior. DefaultClock is the default clock used by Zap in operations that require time. This clock uses the system clock for all operations. CapitalColorLevelEncoder serializes a Level to an all-caps string and adds color.

Golang zap

In contexts where performance is nice, but not critical, use the SugaredLogger. It's x faster than other structured logging packages and includes both structured and printf -style APIs. When performance and type safety are critical, use the Logger. It's even faster than the SugaredLogger and allocates far less, but it only supports structured logging. See the documentation and FAQ for more details. For applications that log in the hot path, reflection-based serialization and string formatting are prohibitively expensive — they're CPU-intensive and make many small allocations. Zap takes a different approach. It includes a reflection-free, zero-allocation JSON encoder, and the base Logger strives to avoid serialization overhead and allocations wherever possible. By building the high-level SugaredLogger on that foundation, zap lets users choose when they need to count every allocation and when they'd prefer a more familiar, loosely typed API. As measured by its own benchmarking suite , not only is zap more performant than comparable structured logging packages — it's also faster than the standard library. Like all benchmarks, take these with a grain of salt. All APIs are finalized, and no breaking changes will be made in the 1.

Desugar unwraps a SugaredLogger, exposing the original Logger. RegisterHooks for details. Infow "Hello from SugaredLogger!

Zap takes an opinionated stance on logging and doesn't provide any printf -style helpers. Rather than logger. This a bit more verbose, but it enables powerful ad-hoc analysis, flexible dashboarding, and accurate message bucketing. For compatibility with the standard library and bark , zap provides the zwrap. Standardize and zbark. Barkify wrappers.

Zap was birthed from Uber's need for a high-speed logger that could keep pace with its voluminous, high-throughput applications without being the system's bottleneck. Traditional loggers often produce a significant overhead, slowing down applications and, in high-velocity contexts, can even drop logs. Furthermore, in distributed systems and microservices architectures — like those employed at Uber — the ability to produce structured logs becomes paramount for tracing, monitoring, and debugging. Zap's design principles centered around performance and safety. With its unique design, Zap claims to be one of the fastest loggers in Go. But speed isn't its only forte; Zap also provides human-friendly and machine-readable log formats , catering to both developers and log aggregation systems. When it comes to Go, adding external dependencies is straightforward with the help of Go Modules. Introduced in Go 1. This command instructs the Go toolchain to fetch the latest version of Zap and update your project's go. The core Logger in Zap provides ultra-fast, leveled, structured logging.

Golang zap

In contexts where performance is nice, but not critical, use the SugaredLogger. It's x faster than other structured logging packages and includes both structured and printf -style APIs. When performance and type safety are critical, use the Logger. It's even faster than the SugaredLogger and allocates far less, but it only supports structured logging. See the documentation and FAQ for more details. For applications that log in the hot path, reflection-based serialization and string formatting are prohibitively expensive — they're CPU-intensive and make many small allocations. Zap takes a different approach. It includes a reflection-free, zero-allocation JSON encoder, and the base Logger strives to avoid serialization overhead and allocations wherever possible. By building the high-level SugaredLogger on that foundation, zap lets users choose when they need to count every allocation and when they'd prefer a more familiar, loosely typed API. As measured by its own benchmarking suite , not only is zap more performant than comparable structured logging packages — it's also faster than the standard library.

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Second , sugar. Infof "Hello from Zap logger! Logging in Apache. This is the most flexible way to construct a Logger, but also the most verbose. Check zap. RegisterHooks for details. Note that pointers to these objects must implement zapcore. Logging in PHP. Duration constructs a field with the given key and value. See NewProductionEncoderConfig for information on the default encoder configuration. Jump to. This helps prevent key collisions when injecting loggers into sub-components or third-party libraries. ReplaceGlobals logger defer undo zap. Encoder, zapcore. It's x faster than other structured logging packages and includes both structured and printf -style APIs.

In contexts where performance is nice, but not critical, use the SugaredLogger. It's x faster than other structured logging packages and includes both structured and printf -style APIs. When performance and type safety are critical, use the Logger.

Logging with Serilog. Blazing fast, structured, leveled logging in Go. It's included only so that Duration- and TimeEncoders cannot trigger infinite recursion. NewConsoleEncoder zap. Notifications Fork 1 Star 0. Logger instance with a context. Log Shippers. Panicln logs a message at PanicLevel and panics. Zap provides the log levels below in increasing order of severity. We're only including the process ID of the program here, but you can add other useful global metadata like the Go version running the program, git commit hash or application version, environment or deployment information, and more. The zap maintainers keep an eye on issues and pull requests, but you can also report any negative conduct to oss-conduct uber. Writer that can also flush any buffered data.