Class MetricNames

Namespace

Typhon.Engine

Assembly

Typhon.Engine.dll

Standard metric names for consistent taxonomy across components.

public static class MetricNames

Inheritance

object

MetricNames

Inherited Members

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Examples

writer.WriteThroughput(MetricNames.CacheHits, _cacheHits);
writer.WriteThroughput(MetricNames.CacheMisses, _cacheMisses);
writer.WriteDuration(MetricNames.Flush, _lastFlushUs, _avgFlushUs, _maxFlushUs);

Remarks

Using centralized names ensures:

• Consistent Grafana dashboard queries (e.g., sum(typhon_cache_hits))
• IntelliSense discoverability
• No typos across components

Use these constants with WriteThroughput(string, long) and WriteDuration(string, long, long, long) instead of string literals.

Fields

CacheHits

Number of cache hits (successful lookups).

public const string CacheHits = "CacheHits"

Field Value

string

CacheMisses

Number of cache misses (lookups requiring load).

public const string CacheMisses = "CacheMisses"

Field Value

string

CheckpointFlush

Duration of checkpoint flush operations.

public const string CheckpointFlush = "CheckpointFlush"

Field Value

string

CheckpointsCompleted

Number of checkpoints completed.

public const string CheckpointsCompleted = "CheckpointsCompleted"

Field Value

string

Commit

Duration of commit operations.

public const string Commit = "Commit"

Field Value

string

Committed

Number of transactions successfully committed.

public const string Committed = "Committed"

Field Value

string

Conflicts

Number of concurrency conflicts detected.

public const string Conflicts = "Conflicts"

Field Value

string

Created

Number of transactions/objects created.

public const string Created = "Created"

Field Value

string

Deletes

Number of entries deleted.

public const string Deletes = "Deletes"

Field Value

string

Evictions

Number of entries evicted from cache.

public const string Evictions = "Evictions"

Field Value

string

Flush

Duration of general flush operations.

public const string Flush = "Flush"

Field Value

string

Flushes

Number of flush operations completed.

public const string Flushes = "Flushes"

Field Value

string

HeartbeatsChecked

Number of heartbeat checks performed.

public const string HeartbeatsChecked = "HeartbeatsChecked"

Field Value

string

Inserts

Number of entries inserted.

public const string Inserts = "Inserts"

Field Value

string

Lookups

Number of index lookups (point queries).

public const string Lookups = "Lookups"

Field Value

string

Merges

Number of node merges (B+Tree compaction).

public const string Merges = "Merges"

Field Value

string

RangeScans

Number of range scans performed.

public const string RangeScans = "RangeScans"

Field Value

string

RecordsWritten

Number of WAL records written.

public const string RecordsWritten = "RecordsWritten"

Field Value

string

RolledBack

Number of transactions rolled back.

public const string RolledBack = "RolledBack"

Field Value

string

SnapshotCreation

Duration of snapshot creation.

public const string SnapshotCreation = "SnapshotCreation"

Field Value

string

Splits

Number of node splits (B+Tree growth).

public const string Splits = "Splits"

Field Value

string

TransactionLifetime

Duration of transaction lifetime (create to commit/rollback).

public const string TransactionLifetime = "TransactionLifetime"

Field Value

string