Limits and defaults

This page collects the default values and built-in limits that govern a Clustron Zaris store, with links to the concept or configuration page where each is explained. Values marked configurable can be changed; the rest are structural.

Memory

Limit	Default	Configurable	Reference
Per-node memory ceiling	1 GiB	Yes (memory.maxSizeBytes)	Memory and eviction
Maximum single item size	4 MiB	No	Memory and eviction
Eviction policy	LRU	No	Memory and eviction
Eviction trigger / target	80% / 70% of ceiling	No	Memory and eviction
Eviction loop interval	1000 ms	No	Memory and eviction
Eviction candidate sample size	16	No	Memory and eviction
Eviction scan window per segment	64	No	Memory and eviction
Inheritance grace window	120 seconds	No	Memory and eviction

Only the memory ceiling is configurable today; the eviction policy, thresholds, interval, and item-size cap are fixed defaults.

There is no "unbounded" memory setting — a node is always a bounded buffer.

Replication and topology

Setting	Default	Reference
Replication factor	1 (no replica)	Partitioning and replication
Recommended production replication factor	2	Replicas
Replication mode	Async	Consistency
Write quorum (sync only)	All	Configuration reference
Sync ack timeout	5 seconds	Configuration reference
Partition count	One partition per node	Partitions
Replica reads	Disabled	Consistency

Security

Setting	Default	Reference
Token authentication	Disabled	Authentication and tokens
Transport security (TLS)	Disabled	TLS encryption
Minimum TLS protocol (when enabled)	TLS 1.2	TLS encryption
TLS peer verification	CaAndIdentity	Configuration reference
CA source	Generate	CA trust modes
CA validity (generated)	3650 days	CA trust modes
Leaf certificate validity	90 days	Certificate management
Leaf renew-at fraction	0.66 of lifetime	Certificate management
Enrollment token TTL	15 minutes	Configuration reference

Client retry

Setting	Default	Reference
Auto-retried statuses	Moved, ReplicaWriteRejected, Unavailable, Migrating, OwnershipChanging	Client resilience patterns
Retry backoff cap	2 seconds	Client resilience patterns

Cluster and membership timing

All of these are configurable in the store configuration (membership and runtime sections).

Setting	Default	Reference
Cluster-view log interval	10 seconds	Configuration reference
Readiness minimum nodes	1	Configuration reference
Readiness timeout	30 seconds	Configuration reference
Stable-membership duration	3 seconds	Configuration reference
Node grace window	30 seconds	Configuration reference
Membership stability window	8 seconds	Configuration reference
Discovery peer wait	1 second	Configuration reference
Partition-group eviction window	30 seconds	Failure and recovery
Runtime-sync peer response timeout	2 seconds	Configuration reference
Ownership suspect-escalation timeout	10 seconds	Configuration reference
Preferred-primary restore dwell	8 seconds	Configuration reference

Connections and retry (cluster)

Node-to-node connection settings from the store configuration (retry and transport). These are separate from the client-SDK retry above.

Setting	Default	Reference
Connection retry attempts	2	Configuration reference
Connection retry delay	500 ms	Configuration reference
Duplex peer connections	Enabled	Configuration reference

Telemetry and logging

Setting	Default	Reference
OpenTelemetry export	Disabled	Logging and tracing
Trace sample ratio (when enabled)	1.0 (all)	Logging and tracing
Console and file log sinks	Enabled by the installer's configuration	Logging and tracing
Push-metrics rolling window / timeout	120 seconds / 60000 ms	Logging and tracing

Platform targets

Component	Target framework
Client SDK	.NET Standard 2.0
Store / server and cache adapters	.NET 8

Next steps

• Configuration reference
• Status and exception reference