Performance optimizations

[thmarx]

• Reuse js context for request and theme
• think about using a object pool for js context

[thmarx]

simple performance tests done with ab, the command is executed twice, first for warmup, second for metric.
ab -n 1000 -c 10 http://localhost:1010/

result without pool

Connection Times (ms)

	min	mean[+/-sd]	median	max
Connect	0	0 [0.5]	0	2
Processing	6	12 [6.6]	11	124
Waiting	5	12 [6.6]	11	124
Total	6	13 [6.6]	11	124

result after enableing pool

	min	mean[+/-sd]	median	max
Connect	0	0 [0.4]	0	4
Processing	2	7 [6.0]	4	25
Waiting	2	7 [6.0]	3	25
Total	2	7 [6.0]	4	26

[thmarx]

for the first this should be enough,

maybe we should look into the following points:

• https://medium.com/@venkatperi/jetty-navigating-thread-starvation-in-threadpool-based-servers-87ef18e8d1fc
• an async request processing

but open new issues for that.