1.3.2. Accept Headers
The Data Grid REST endpoint is compliant with the RFC-2616 Accept header and negotiates the correct MediaType based on the conversions supported.
For example, send the following header when reading data:
Accept: text/plain;q=0.7, application/json;q=0.8, */*;q=0.6
The preceding header causes Data Grid to first return content in JSON format (higher priority 0.8). If it is not possible to convert the storage format to JSON, Data Grid attempts the next format of text/plain (second highest priority 0.7). Finally, Data Grid falls back to */*, which picks a suitable format based on the cache configuration.