> For the complete documentation index, see [llms.txt](https://brightercommand.gitbook.io/paramore-brighter-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox.md). # Outbox and Inbox - [Outbox Support](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighteroutboxsupport.md): Brighter supports storing messages that are sent via an External Bus in an Outbox, as per the Outbox Pattern. - [MSSQL Outbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighteroutboxsupport/mssqloutbox.md): The MSSQL Outbox provides a message store for the Transactional Outbox pattern using a Microsoft SQL Server database. - [MySQL Outbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighteroutboxsupport/mysqloutbox.md): The MySQL Outbox provides a message store for the Transactional Outbox pattern using a MySQL database. - [Postgres Outbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighteroutboxsupport/postgresoutbox.md): The PostgreSQL Outbox provides a message store for the Transactional Outbox pattern using a PostgreSQL database. - [Sqlite Outbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighteroutboxsupport/sqliteoutbox.md): The SQLite Outbox provides a message store for the Transactional Outbox pattern using a SQLite database. - [Dapper Outbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighteroutboxsupport/dapperoutbox.md): The Dapper Outbox allows integration between Dapper and Brighter's outbox support. - [EF Core Outbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighteroutboxsupport/efcoreoutbox.md): The EFCore Outbox allows integration between EF Core and Brighter's outbox support. - [Dynamo Outbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighteroutboxsupport/dynamooutbox.md): The DynamoDb Outbox allows integration between DynamoDb and Brighter's outbox support. - [MongoDb Outbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighteroutboxsupport/mongodboutbox.md): The MongoDB Outbox allows integration between MongoDB and Brighter's outbox support. - [Firestore Outbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighteroutboxsupport/firestoreoutbox.md): The Firestore Outbox stores messages in a Google Cloud Firestore collection, so a message and the business write that produced it commit together. - [Spanner Outbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighteroutboxsupport/spanneroutbox.md): The Spanner Outbox stores messages in a Google Cloud Spanner table, and it is configured entirely through the shared relational configuration. - [InMemory Outbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighteroutboxsupport/inmemoryoutbox.md): The in-process Outbox: flushing, compaction, configuration and limits. - [Transactional Messaging with the Outbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/transactionalmessagingwiththeoutbox.md): This section provides a complete example showing both producer and consumer using transactional messaging with the Outbox and Inbox patterns. - [Outbox Archiver](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/outboxarchiver.md): The Outbox Archiver is a background service that monitors an Outbox and moves messages older than a certain age into long-term storage, keeping your Outbox small. - [Azure Blob Archive Provider](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/outboxarchiver/azureblobarchiveprovider.md): The Azure Blob Archive Provider is a provider for Outbox Archiver. - [Azure Archive Provider Configuration](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/outboxarchiver/azureblobarchiveprovider/azureblobconfiguration.md): The Azure Archive Provider writes messages swept from your Outbox into an Azure Blob Storage container. - [Sweeper Circuit Breaking](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/sweepercircuitbreaking.md): Sweeper Circuit Breaking is a resilience feature that prevents failures to publish to one topic from blocking attempts to publish to other topics, when publishing messages from the Outbox. - [Using Sweeper Circuit Breaking](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/sweepercircuitbreaking/usingsweepercircuitbreaking.md): How to wire circuit breaking into an Outbox Sweeper, tune its cooldown, and extend it with your own or a distributed breaker. - [Inbox Support](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighterinboxsupport.md): Messaging makes the guaranteed, at least once promise. - [MSSQL Inbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighterinboxsupport/mssqlinbox.md): The MSSQL Inbox allows use of MSSQL for Brighter's inbox support. - [MySQL Inbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighterinboxsupport/mysqlinbox.md): The MySQL Inbox allows use of MySQL for Brighter's inbox support. - [Postgres Inbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighterinboxsupport/postgresinbox.md): The Postgres Inbox allows use of Postgres for Brighter's inbox support. - [Sqlite Inbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighterinboxsupport/sqliteinbox.md): The Sqlite Inbox allows use of Sqlite for Brighter's inbox support. - [Dynamo Inbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighterinboxsupport/dynamoinbox.md): The DynamoDb Inbox allows use of DynamoDb for Brighter's inbox support. - [MongoDb Inbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighterinboxsupport/mongodbinbox.md): The MongoDB Inbox allows use of MongoDB for Brighter's inbox support. - [Firestore Inbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighterinboxsupport/firestoreinbox.md): The Firestore Inbox records the messages a consumer has already handled in a Google Cloud Firestore collection, so a redelivery is recognised rather than reprocessed. - [Spanner Inbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighterinboxsupport/spannerinbox.md): The Spanner Inbox records the messages a consumer has already handled in a Google Cloud Spanner table, so a redelivery is recognised rather than reprocessed. - [InMemory Inbox](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/brighterinboxsupport/inmemoryinbox.md): The in-process Inbox: when to use it, how to configure it, and its limits. - [Replay On Seen](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/replayonseen.md): When your Inbox recognises a message it has already handled, it normally throws or logs a warning and stops — the work is done, so there is nothing to do. - [Turning On Replay On Seen](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/replayonseen/turningonreplayonseen.md): This page is the procedure: what to switch on, what you must thread through your code, what to check before you enable it, and a worked example. - [Replay On Seen Reference](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/replayonseen/replayonseenreference.md): Which stores support Replay On Seen, the cases where it does not fire, the events it emits, and its limitations. - [Causation Tracking in a Custom Store](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/causationtrackingstores.md): Replay On Seen needs two things from your storage. - [Distributed Lock](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/distributedlock.md): A distributed lock lets multiple instances of your application coordinate so that only one of them performs a given task at a time. - [DynamoDB Distributed Lock](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/distributedlock/dynamodbdistributedlock.md): The DynamoDB locking provider implements Brighter's distributed lock on top of Amazon DynamoDB, so a single Outbox Sweeper and Archiver run when you scale out. - [Postgres Distributed Lock](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/distributedlock/postgresdistributedlock.md): The Postgres locking provider implements Brighter's distributed lock using PostgreSQL advisory locks, so a single Outbox Sweeper and Archiver run when you scale out. - [MSSQL Distributed Lock](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/distributedlock/mssqldistributedlock.md): The MS SQL locking provider implements Brighter's distributed lock using SQL Server application locks (sp\_getapplock / sp\_releaseapplock). - [MySQL Distributed Lock](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/distributedlock/mysqldistributedlock.md): The MySQL locking provider implements Brighter's distributed lock using MySQL's named locks (GET\_LOCK / RELEASE\_LOCK), so a single Outbox Sweeper and Archiver run when you scale out. - [Azure Blob Distributed Lock](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/distributedlock/azureblobdistributedlock.md): The Azure Blob locking provider implements Brighter's distributed lock using blob leases in Azure Blob Storage, so a single Outbox Sweeper and Archiver run when you scale out. - [MongoDB Distributed Lock](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/distributedlock/mongodbdistributedlock.md): The MongoDB locking provider implements Brighter's distributed lock by writing lock documents to a MongoDB collection, so a single Outbox Sweeper and Archiver run when you scale out. - [Firestore Distributed Lock](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/distributedlock/firestoredistributedlock.md): The Firestore locking provider implements Brighter's distributed lock using Google Cloud Firestore, so a single Outbox Sweeper and Archiver run when you scale out. - [Box Provisioning](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/boxprovisioning.md): BoxProvisioning is the Brighter library that creates and migrates your Outbox and Inbox tables at application startup. - [Configuring Box Provisioning](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/boxprovisioning/boxprovisioningconfiguration.md): This page is the how-to companion to Box Provisioning. - [Upgrading Existing Deployments](https://brightercommand.gitbook.io/paramore-brighter-documentation/outbox-and-inbox/boxprovisioning/boxprovisioningupgrade.md): This page is for operators of a pre-existing Brighter deployment who are adopting Database Provisioning for the first time. --- # Agent Instructions This documentation is published with GitBook. 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