Crate corium_transactor

Expand description

Embedded single-writer transaction pipeline and index publisher, plus the networked transactor process (lease, gRPC services, indexing job).

Re-exports§

backend: Pluggable transactor storage backends.
backup: Online, storage-native database backup and offline restore.
lease: Write leases carried on the database root record (see docs/design/log-and-transactor.md).
metrics: Lightweight process metrics with Prometheus text exposition.
node: The transactor as a process: multi-database state, durable naming, lease acquisition/renewal, background indexing, tx-report fan-out, and high-availability standby takeover.
server: Tonic services exposing a TransactorNode over the network.
txfn: Built-in Clojure transaction-function runtime (:db/fn, ADR-0008) on the bounded, GC-less cljrs-tx interpreter (feature cljrs).

BatchCursor: A cursor for preparing a group-commit batch against an evolving in-memory value without touching the live one. Each Self::prepare validates against the effects of the earlier transactions in the batch (uniqueness, cardinality-one retraction, CAS), so a batch commits with exactly the semantics of committing the transactions one at a time. The caller makes the batch’s records durable, then publishes the cursor with EmbeddedTransactor::install_batch; a batch that never installs leaves the live value untouched.
DbRoot: Published durable index-root metadata carrying the write lease (see docs/design/log-and-transactor.md).
EmbeddedTransactor: A serialized, in-process transactor. The log append is the commit point.
Prepared: A transaction prepared against a BatchCursor but not yet durable, carrying its log record and the pieces needed to build a TxReport once the batch is durable.
TxReport: Result delivered after a transaction is durable and visible.

db_root_name: Root-store key for a database’s published index root.
publish_root: Publishes root under the fencing rules described on EmbeddedTransactor::publish_indexes.