Questo contenuto non è disponibile nella lingua selezionata.

11.6.7. Hot Rod GetWithMetadata Operation


A Hot Rod GetWithMetadata operation uses the following request format:
Expand
Table 11.18. GetWithMetadata Operation Request Format
Field Data Type Details
Header variable Request header.
Key Length vInt Length of key. Note that the size of a vInt can be up to five bytes, which theoretically can produce bigger numbers than Integer.MAX_VALUE. However, Java cannot create a single array that is bigger than Integer.MAX_VALUE, hence the protocol limits vInt array lengths to Integer.MAX_VALUE.
Key byte array Byte array containing the key whose value is being requested.
The response header for this operation contains one of the following response statuses:
Expand
Table 11.19. GetWithMetadata Operation Response Format
Field Data Type Details
Header variable Response header.
Response status 1 byte
0x00 = success, if key retrieved.
0x02 = if key does not exist.
Flag 1 byte A flag indicating whether the response contains expiration information. The value of the flag is obtained as a bitwise OR operation between INFINITE_LIFESPAN (0x01) and INFINITE_MAXIDLE (0x02).
Created Long (optional) a Long representing the timestamp when the entry was created on the server. This value is returned only if the flag's INFINITE_LIFESPAN bit is not set.
Lifespan vInt (optional) a vInt representing the lifespan of the entry in seconds. This value is returned only if the flag's INFINITE_LIFESPAN bit is not set.
LastUsed Long (optional) a Long representing the timestamp when the entry was last accessed on the server. This value is returned only if the flag's INFINITE_MAXIDLE bit is not set.
MaxIdle vInt (optional) a vInt representing the maxIdle of the entry in seconds. This value is returned only if the flag's INFINITE_MAXIDLE bit is not set.
Entry Version 8 bytes Unique value of an existing entry modification. The protocol does not mandate that entry_version values are sequential, however they need to be unique per update at the key level.
Value Length vInt If success, length of value.
Value byte array If success, the requested value.
Torna in cima
Red Hat logoGithubredditYoutubeTwitter

Formazione

Prova, acquista e vendi

Community

Informazioni sulla documentazione di Red Hat

Aiutiamo gli utenti Red Hat a innovarsi e raggiungere i propri obiettivi con i nostri prodotti e servizi grazie a contenuti di cui possono fidarsi. Esplora i nostri ultimi aggiornamenti.

Rendiamo l’open source più inclusivo

Red Hat si impegna a sostituire il linguaggio problematico nel codice, nella documentazione e nelle proprietà web. Per maggiori dettagli, visita il Blog di Red Hat.

Informazioni su Red Hat

Forniamo soluzioni consolidate che rendono più semplice per le aziende lavorare su piattaforme e ambienti diversi, dal datacenter centrale all'edge della rete.

Theme

© 2026 Red Hat