launchdarkly::server_side::config::builders::LazyLoadBuilder Struct Reference

LazyLoadBuilder allows for specifying the configuration of the Lazy Load data system, which is appropriate when a LaunchDarkly environment should be stored external to the SDK (such as in Redis.) More...

#include <lazy_load_builder.hpp>

Public Types
using	SourcePtr = std::shared_ptr< integrations::ISerializedDataReader >
using	EvictionPolicy = built::LazyLoadConfig::EvictionPolicy

Public Member Functions
	LazyLoadBuilder ()
	Constructs a new LazyLoadBuilder.
LazyLoadBuilder &	Source (SourcePtr source)
	Specify the source of the data. More...
LazyLoadBuilder &	CacheRefresh (std::chrono::milliseconds ttl)
	Specify the duration data items should live in-memory before requiring a refresh via the database. The chosen EvictionPolicy affects usage of this TTL. More...
LazyLoadBuilder &	CacheEviction (EvictionPolicy policy)
	Specify the eviction policy when a data item's TTL expires. At this time, only EvictionPolicy::Disabled is supported (the default), which leaves stale items in the cache until they can be refreshed. More...
tl::expected< built::LazyLoadConfig, Error >	Build () const

Detailed Description

LazyLoadBuilder allows for specifying the configuration of the Lazy Load data system, which is appropriate when a LaunchDarkly environment should be stored external to the SDK (such as in Redis.)

In the Lazy Load system, flag and segment data is fetched on-demand from the database and stored in an in-memory cache for a specific duration. This allows the SDK to maintain a working set of data that may be a specific subset of the entire environment.

The database is read-only from the perspective of the SDK. To populate the database with flag and segment data, an external process (e.g. Relay Proxy or another SDK) is necessary.

Member Function Documentation

CacheEviction()

LazyLoadBuilder & launchdarkly::server_side::config::builders::LazyLoadBuilder::CacheEviction

(

EvictionPolicy

policy

)

Specify the eviction policy when a data item's TTL expires. At this time, only EvictionPolicy::Disabled is supported (the default), which leaves stale items in the cache until they can be refreshed.

Parameters

policy

The EvictionPolicy.

Returns

Reference to this.

CacheRefresh()

LazyLoadBuilder & launchdarkly::server_side::config::builders::LazyLoadBuilder::CacheRefresh

(

std::chrono::milliseconds

ttl

)

Specify the duration data items should live in-memory before requiring a refresh via the database. The chosen EvictionPolicy affects usage of this TTL.

Parameters

ttl	The time-to-live for an item.

Returns

Reference to this.

Source()

LazyLoadBuilder & launchdarkly::server_side::config::builders::LazyLoadBuilder::Source

(

SourcePtr

source

)

Specify the source of the data.

Parameters

source

Component implementing ISerializedDataReader. Ownership is shared.

Returns

Reference to this.

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The documentation for this struct was generated from the following files:

• include/launchdarkly/server_side/config/builders/data_system/lazy_load_builder.hpp
• src/config/builders/data_system/lazy_load_builder.cpp