Using the following code, I am doing a find using regex:
This is the incoming parameters: "message", "^((.*?)(some text1))$"
This is taking over 6.5 seconds to retrieve 20 documents in a collection of 400,000 documents.
Running this query in Mongo shell returns very fast.
Why would Spring-data/Mongo take so much longer?
Code:
public List<LogItem> executeQueryRegex(String fieldName, String searchText) {
System.out.println("Entering executeQueryRegex");
int rowCount = 0;
MongoOperations mongoOps = mongoTemplate;
Criteria criteria1 = Criteria.where(fieldName).regex(searchText, "i");
Query messageQuery1 = new Query(criteria1);
messageQuery1.fields().include("_id");
messageQuery1.fields().include("message");
//System.out.println("Calling: mongoOps.find");
List<LogItem> logItems1 = mongoOps.find(messageQuery1, LogItem.class, "logItem");
//System.out.println("Called: mongoOps.find");
rowCount += logItems1.size();
//System.out.println("Row Count: " + rowCount);
//for (int index = 0; index < logItems1.size(); index++){
// System.out.println(logItems1.get(index).getId() + ", " + logItems1.get(index).getMessage());
//}
System.out.println("Row Count: " + rowCount);
System.out.println("Exiting executeQueryRegex");
return logItems1;
}This is taking over 6.5 seconds to retrieve 20 documents in a collection of 400,000 documents.
Running this query in Mongo shell returns very fast.
Why would Spring-data/Mongo take so much longer?
