Crate mz_stash

Durable metadata storage.

Modules

• objects
  The current types that are serialized in the Stash.
• postgres 🔒
• transaction 🔒
• upgrade
  This module contains all of the helpers and code paths for upgrading/migrating the Stash.

Structs

• AntichainFormatter 🔒
• AppendBatch
  An AppendBatch describes a set of changes to append to a stash collection.
• DebugStashFactory
  Stash factory to use for tests that uses a random schema for a stash, which is re-used on all stash openings. The schema is dropped when this factory is dropped.
• Stash
  A Stash whose data is stored in a Postgres-compatible database. The format of the tables are not specified and should not be relied upon. The only promise is stability. Any changes to the table schemas will be accompanied by a clear migration path.
• StashCollection
  StashCollection is like a differential dataflow Collection, but the state of the collection is durable.
• StashError
  An error that can occur while interacting with a Stash.
• StashFactory
  Factory type used to open new one or more Stash.
• TableTransaction
  TableTransaction emulates some features of a typical SQL transaction over table for a StashCollection.
• Transaction
• TypedCollection
  A helper struct to prevent mistyping of a StashCollection’s name and k,v types.

Enums

• InternalStashError 🔒

Constants

• COLLECTION_CONFIG
• INSERT_BATCH_SPLIT_SIZE
  The limit AFTER which to split an update batch (that is, we will ship an update that exceeds this number, but then start another batch).
• MIN_STASH_VERSION 🔒
  The minimum Stash version number that we support migrating from.
• STASH_VERSION
  The current version of the Stash.
• USER_VERSION_KEY
  The key within the Config Collection that stores the version of the Stash.

Traits

• Data
  A common trait for uses of K and V to express in a single place all of the traits required by async_trait and StashCollection.

Type Definitions

• Diff
• Id 🔒
• Timestamp