Class RedisKeys

java.lang.Object

tech.skworks.tachyon.service.infra.RedisKeys

public final class RedisKeys
extends Object

Project Tachyon Class RedisKeys

Single source of truth for the player-lifecycle Redis keys and their TTLs.

These prefixes and durations used to be duplicated as literals across PlayerDataGrpcService, PlayerSessionGrpcService and PlayerDataStreamWorker. Centralizing them guarantees the cross-server ownership lock (STATE_PREFIX) is renewed by the heartbeat with the exact same TTL it is acquired with — the invariant the anti-duplication guarantee depends on.

Since:

1.0.0-SNAPSHOT

Version:

1.0

Author:

Jimmy (vSKAH)

Field Summary

Fields

Modifier and Type	Field	Description
static final String	CACHE_PREFIX	Hot read cache of the last known profile.
static final int	CACHE_TTL_SECONDS	TTL (seconds) of the read cache.
static final String	DIRTY_PREFIX	Save-in-progress guard: blocks a concurrent pull while data is being persisted.
static final int	DIRTY_TTL_SECONDS	TTL (seconds) of the dirty guard.
static final String	STATE_PREFIX	Cross-server ownership lock: set NX EX on pull, renewed by heartbeats.
static final int	STATE_TTL_SECONDS	TTL (seconds) of the ownership lock — MUST match the heartbeat renewal delay.

Method Summary

Modifier and Type	Method	Description
static String	cache(String uuid)
static String	dirty(String uuid)
static String	state(String uuid)

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

STATE_PREFIX

public static final String STATE_PREFIX

Cross-server ownership lock: set NX EX on pull, renewed by heartbeats.

See Also:

• Constant Field Values

DIRTY_PREFIX

public static final String DIRTY_PREFIX

Save-in-progress guard: blocks a concurrent pull while data is being persisted.

See Also:

• Constant Field Values

CACHE_PREFIX

public static final String CACHE_PREFIX

Hot read cache of the last known profile.

See Also:

• Constant Field Values

STATE_TTL_SECONDS

public static final int STATE_TTL_SECONDS

TTL (seconds) of the ownership lock — MUST match the heartbeat renewal delay.

See Also:

• Constant Field Values

DIRTY_TTL_SECONDS

public static final int DIRTY_TTL_SECONDS

TTL (seconds) of the dirty guard.

See Also:

• Constant Field Values

CACHE_TTL_SECONDS

public static final int CACHE_TTL_SECONDS

TTL (seconds) of the read cache.

See Also:

• Constant Field Values

Method Details

state

public static String state(String uuid)

dirty

public static String dirty(String uuid)

cache

public static String cache(String uuid)