Namespaces

Here is a list of all documented namespaces with brief descriptions:

[detail level 1234]

Ncache	Utilities for caching
▼Nclients
Ndns	DNS client
Nhttp	HTTP client helpers
Ncompiler	Compiler and C++ language related tweaks
Ncomponents	Contains functions and types to start a userver based service/tool
Nconcurrent	Locking stuff
Ncongestion_control	Congestion Control
▼Ncrypto	Cryptography support
Nalgorithm	Miscellaneous cryptographic routines
Nbase64	Cryptographic hashing
►Nhash	Cryptographic hashing
Nweak	Broken cryptographic hashes, must not be used except for compatibility
Ndecimal64	Fixed-point decimal data type and related functions
Ndist_lock	Distributed locking
Ndrivers	Top namespace for drivers building blocks
Ndump	Dumping of cache-like components
Neasy	Top namespace for easy library
▼Nengine	Asynchronous engine primitives
Ncurrent_task	Namespace with functions to work with current task from within it
Nio	Low-level asynchronous I/O interfaces
Nerror_injection	Artificial errors injection framework
▼Nformats	Value formats representation, parsing and serialization
Nbson	BSON support
Ncommon	Common utilities for all the formats
►Njson	JSON support
Nblocking
Nparser	SAX parser tools
Nliterals
Nparse	Generic parsers and converters
Nserialize	Common serializers
►Nyaml	YAML support
Nblocking
▼Nfs	Filesystem support
Nblocking	Blocking function and classes to work with filesystem
▼Ngrpc_protovalidate
Nclient
Nserver	Top namespace for the server part of the grpc-protovalidate library
Ngrpc_reflection	Top namespace for grpc-reflection library
▼Nhostinfo	Information about current host
Nblocking	Blocking functions for getting information about hosts
▼Nhttp	HTTP helpers
►Nheaders	Common HTTP headers
Nb3	B3 tracing Headers
Nopentelemetry	OpenTelemetry tracing Headers
▼Nlogging	Logging macro and utilities
Nstacktrace_cache	Contains functions that cache stacktrace results
▼Nmiddlewares
Ngroups
Nos_signals	Components and functions to work with OS signals
▼Nproto_structs	Top namespace for the proto-structs library
Nio	Namespace for conversion utlities and predefined proto-structs conversion hooks for well-known std/userver types
Ntraits	Namespace contains types for obtaining meta information (traits, concepts, etc.)
▼Npytest_userver	Python module pytest_userver provides testsuite support for userver services
Nchaos	Python module that provides testsuite support for chaos tests; see Chaos Testing for an introduction
Nclient	Python module that provides clients for functional tests with testsuite; see Functional service tests (testsuite) for an introduction
Ndynconf	Python module that provides classes and constants that may be useful when working with the dynamic config in testsuite
Ngrpc	Mocks for the gRPC servers, a.k.a
Nmetrics	Python module that provides helpers for functional testing of metrics with testsuite; see Functional service tests (testsuite) for an introduction
►Nplugins
Nbase	Configure the service in testsuite
Ncaches	Fixtures for controlling userver caches
Nclickhouse	Plugin that imports the required fixtures to start the Clickhouse database
Nconfig	Work with the configuration files of the service in testsuite
Ncore	Python plugin that provides core fixtures for functional tests with testsuite; see Functional service tests (testsuite) for an introduction
Ncoverage	Helpers for coverage plugins
Ndynamic_config	Supply dynamic configs for the service in testsuite
►Ngrpc	Python plugin that provides gRPC fixtures for functional tests with testsuite; see Functional service tests (testsuite) for an introduction
Nclient	Make gRPC requests to the service
Nmockserver	Mocks for the gRPC servers
Nkafka	Plugin that imports the required fixtures to start the broker
Nlog_capture	Capture and work with logs
Nmongo	Plugin that imports the required fixtures to start the database and adjusts the mongo "dbconnection" static config value
Nmysql	Plugin that imports the required fixtures to start the MySQL/MariaDB database
Npostgresql	Plugin that imports the required fixtures to start the database and adjusts the PostgreSQL "dbconnection" static config value
Nrabbitmq	Plugin that imports the required fixtures to start the RabbitMQ
Nredis	Plugin that imports the required fixtures to start the Redis database
Nservice	Start the service in testsuite
Nservice_client	Service main and monitor clients
Nservice_runner	Helpers to make the make start-* commands work
Nsql_coverage	Plugin that imports the required fixtures for checking SQL/YQL coverage
Ntestpoint	Testpoints support for the server
Nydb	Pytest plugin that provides YDB fixtures for functional tests with testsuite; see YDB for an introduction
Nrcu	Read-Copy-Update
Ns3api	Top namespace for S3 library
▼Nserver
Nhandlers	Most common userver HTTP handlers
Nhttp	Server parts of the HTTP protocol implementation
►Nmiddlewares	HTTP server middlewares
Nbuiltin	Names of userver's built-in HTTP server middlewares
Nrequest	Server request related types and functions
Nstd	STL namespace
▼Nstorages	Components, clients and helpers for different databases and storages
►Nclickhouse	Top namespace for uClickHouse driver
►Nio	UClickHouse input-output
Ncolumns	UClickHouse columns
►Nmongo	MongoDB client
Nbulk_ops	Bulk sub-operations
Noperations	Collection operations
Noptions	Collection operation options
►Nmysql	Top namespace for uMySQL driver
Nconvert	Namespace containing helper classes and functions for on-the-flight remapping DbType<->UserType
►Npostgres	Top namespace for uPg driver
►Nio	UPg input-output
Ntraits	UPg input-output traits
Nredis	Valkey and Redis client and helpers
Nsecdist	Credentials storage
Ntestsuite	Testsuite integration
Ntracing	Opentracing support
▼Nugrpc	Asynchronous gRPC driver
►Nclient	Client-side utilities
►Nmiddlewares
Nbaggage
Ndeadline_propagation
Nheaders_propagator
Nlog
Ntestsuite
►Nserver	Server-side utilities
►Nmiddlewares
Naccess_log
Nbaggage
Ncongestion_control
Ndeadline_propagation
Nheaders_propagator
Nlog
Ntests	Userver gRPC testing facilities
Nutest	Mocks and test helpers
▼Nutils	Utilities
Ndatetime	Date and time utilities
Ngenerators	Generators
Nip	IP address and utilities
Nlog	Algorithms to aid logging
►Ntext	Text utilities
Nutf8	UTF8 text utilities
Ntrx_tracker	Tracking for heavy operations while having active transactions
Nyaml_config	Utilities to work with static YAML config