Use BufferedInputStream in SimpleMetaDataReader to double performance [SPR-9528] #14162
Description
Michael Hunger opened SPR-9528 and commented
We have a customer who generated a lot of Spring Data Repositories, the startup time of his application was very long due to that (40 seconds).
When profiling I saw that most of the time was spent in ASM reading the files. As I know ASM to be very fast I looked into the issue and saw
that SimpleMetadataReader doesn't wrap the input stream in a BufferedInputStream. So I tried it in a copy of SimpleMetadataReader
and startup time halved from 40s to 20s.
{CODE}
SimpleMetadataReader(Resource resource, ClassLoader classLoader) throws IOException {
InputStream is = new BufferedInputStream(resource.getInputStream());
{CODE}
Sub-tasks:
- Backport "Use BufferedInputStream in SimpleMetaDataReader to double performance" [SPR-9554] #14188 Backport "Use BufferedInputStream in SimpleMetaDataReader to double performance"