hedged_request.hpp File Reference

Table of Contents

• Detailed Description
• Typedefs
• Functions
• Typedef Documentation
• HedgedRedisRequest
• Function Documentation
• MakeHedgedRedisRequest()
• MakeHedgedRedisRequestAsync()

Detailed Description

Classes and functions for performing hedged requests.

Use MakeHedgedRedisRequest method to perform hedged redis request.

Example(Sync): auto result = ::redis::MakeHedgedRedisRequest<storages::redis::RequestHGet>( redis_client_shared_ptr, &storages::redis::Client::Hget, redis_cc, hedging_settings, key, field); Example(Async): auto future = ::redis::MakeHedgedRedisRequestAsync<storages::redis::RequestHGet>( redis_client_shared_ptr, &storages::redis::Client::Hget, redis_cc, hedging_settings, key, field); auto result = future.Get();

Definition in file hedged_request.hpp.

Go to the source code of this file.

#include <optional>
#include <userver/storages/redis/client.hpp>
#include <userver/storages/redis/command_control.hpp>
#include <userver/utils/hedged_request.hpp>

Include dependency graph for hedged_request.hpp:

Typedefs
template<typename RedisRequestType >
using	redis::HedgedRedisRequest

Functions
template<typename RedisRequestType , typename... Args, typename M = RedisRequestType (storages::redis::Client::*)( Args..., const redis::CommandControl&)>
HedgedRedisRequest< RedisRequestType >	redis::MakeHedgedRedisRequestAsync (std::shared_ptr< storages::redis::Client > redis, M method, const redis::CommandControl &cc, utils::hedging::HedgingSettings hedging_settings, Args... args)
template<typename RedisRequestType , typename... Args, typename M = RedisRequestType (storages::redis::Client::*)( Args..., const redis::CommandControl&)>
RedisRequestType	redis::MakeHedgedRedisRequest (std::shared_ptr< storages::redis::Client > redis, M method, const redis::CommandControl &cc, utils::hedging::HedgingSettings hedging_settings, Args... args)

Typedef Documentation

HedgedRedisRequest

template<typename RedisRequestType >

using redis::HedgedRedisRequest

Initial value:

 utils::hedging::HedgedRequestFuture<
    impl::RedisRequestStrategy<RedisRequestType>>

Definition at line 70 of file hedged_request.hpp.

Function Documentation

MakeHedgedRedisRequest()

template<typename RedisRequestType , typename... Args, typename M = RedisRequestType (storages::redis::Client::*)( Args..., const redis::CommandControl&)>

RedisRequestType redis::MakeHedgedRedisRequest	(	std::shared_ptr< storages::redis::Client >	redis,
		M	method,
		const redis::CommandControl &	cc,
		utils::hedging::HedgingSettings	hedging_settings,
		Args...	args )

< We do retries ourselves

Definition at line 105 of file hedged_request.hpp.

MakeHedgedRedisRequestAsync()

template<typename RedisRequestType , typename... Args, typename M = RedisRequestType (storages::redis::Client::*)( Args..., const redis::CommandControl&)>

HedgedRedisRequest< RedisRequestType > redis::MakeHedgedRedisRequestAsync	(	std::shared_ptr< storages::redis::Client >	redis,
		M	method,
		const redis::CommandControl &	cc,
		utils::hedging::HedgingSettings	hedging_settings,
		Args...	args )

< We do retries ourselves

Definition at line 76 of file hedged_request.hpp.