Module mz_persist_client::cfg

The tunable knobs for persist.

Structs

• DynamicConfig
  Persist configurations that can be dynamically updated.
• PersistConfig
  The tunable knobs for persist.
• RetryParameters

Constants

• CONSENSUS_CONNECTION_POOL_TTL 🔒
  The minimum TTL of a connection to Postgres/CRDB before it is proactively terminated. Connections are routinely culled to balance load against the downstream database.
• CONSENSUS_CONNECTION_POOL_TTL_STAGGER 🔒
  The minimum time between TTLing connections to Postgres/CRDB. This delay is used to stagger reconnections to avoid stampedes and high tail latencies. This value should be much less than consensus_connection_pool_ttl so that reconnections are biased towards terminating the oldest connections first. A value of consensus_connection_pool_ttl / consensus_connection_pool_max_size is likely a good place to start so that all connections are rotated when the pool is fully used.
• CRDB_CONNECT_TIMEOUT
  The duration to wait for a Consensus Postgres/CRDB connection to be made before retrying.
• CRDB_TCP_USER_TIMEOUT
  The TCP user timeout for a Consensus Postgres/CRDB connection. Specifies the amount of time that transmitted data may remain unacknowledged before the TCP connection is forcibly closed.
• MiB 🔒
• USE_CRITICAL_SINCE_CATALOG
  Migrate the catalog to use the critical since when opening a new read handle.
• USE_CRITICAL_SINCE_SNAPSHOT
  Migrate snapshots to use the critical since when opening a new read handle.
• USE_CRITICAL_SINCE_SOURCE
  Migrate the persist source to use the critical since when opening a new read handle.
• USE_CRITICAL_SINCE_TXN
  Migrate the txns code to use the critical since when opening a new read handle.
• USE_GLOBAL_TXN_CACHE_SOURCE
  Migrate the persist source to use a process global txn cache.
• _IMPL_ARBITRARY_FOR_RetryParameters 🔒

Functions

• all_dyncfgs
  Adds the full set of all persist Configs.
• check_data_version