perf.txt

stackoverflow.com
"java": 2,372,330 results: 1048ms
"java control" 3,672,106 results: 2736ms
"python": 1,588,373 results: 1075ms

apple.stackexchange.com
"java": 1,624 results: 504ms
"java control" 10,424 results: 788ms
"python": 1,488 results: 238ms

//With aggregated text field
apple.stackexchange.com
"java": 1,624 results: 21ms
"java control" 10,424 results: 23ms
"python": 1,488 results: 17ms

//Scoring by number of answers (multiplying)
apple.stackexchange.com
"java": 1,624 results: 50ms
"java control" 10,424 results: 92ms
"python": 1,488 results: 88ms

Indexing, as is
apple.stackexchange.com: 87,418ms
with co-routines: 63,051ms

With FunctionScoreQuery boosting
Total time: 24003ms
Avg time per query: 240ms

Without boosting
Total time: 4170ms
Avg time per query: 41ms

stackoverflow.com
With feature field boosting (Satu) x2
Total time: 15487ms
Avg time per query: 154ms

stackoverflow.com
With feature field boosting (Satu) x1
Total time: 14155ms
Avg time per query: 141ms

stackoverflow.com
Without feature field boosting
Total time: 4389ms
Avg time per query: 43ms

stackoverflow.com
With feature field boosting (Log) x2
Total time: 70896ms
Avg time per query: 708ms