[CXF-6219] Handling concurrent Base64 files causes memory overflow

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Won't Do
• Affects Version/s: 2.7.4
• Fix Version/s: Invalid
• Component/s: Soap Binding, WS-* Components
• Labels: documentation

Environment

Production

• Estimated Complexity: Moderate
• Assignee: Unassigned
• Reporter: Abel Salgado Romero
• Created: 23/Jan/15 12:33
• Updated: 10/Apr/17 19:04
• Resolved: 04/Apr/17 19:30

Description

In a previous issue (https://issues.apache.org/jira/browse/CXF-5912) we were advised to update CXF version to avoid OOM errors.
We did so (to 2.74) and the problem was fixed, we also applied a size limit of 20MB using the `org.apache.cxf.stax.maxTextLength` property.
However, the memory consumption in the server is extremely higher than the actual data sent, having 1GB of Heap we get OOM sending just 6 concurrent requests of 20 MB.

Reviewing some documents and other JIRA issues, we understand that Base64 is not optimized and not recomended. Can you confirm if this is the case or if there is a way to optimize how Base64 attachments are processed.

Otoh, MTOM works like a charm