perf: fix thread contention problem

[laststylebender14]

Summary:
Briefly describe the changes made in this PR.

Issue Reference(s):
Fixes #... (Replace "..." with the issue number)

Build & Testing:

• [ ] I ran cargo test successfully.
• [ ] I have run ./lint.sh --mode=fix to fix all linting issues raised by ./lint.sh --mode=check.

Checklist:

• [ ] I have added relevant unit & integration tests.
• [ ] I have updated the documentation accordingly.
• [ ] I have performed a self-review of my code.
• [ ] PR follows the naming convention of <type>(<optional scope>): <title>

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 75.71429% with 17 lines in your changes missing coverage. Please review.

Project coverage is 87.22%. Comparing base (2c67ac5) to head (571ae20).

Files with missing lines	Patch %	Lines
src/core/http/request_handler.rs	75.67%	9 Missing :warning:
src/core/async_graphql_hyper.rs	20.00%	8 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #3085 +/- ## ========================================== - Coverage 87.22% 87.22% -0.01% ========================================== Files 280 280 Lines 27425 27436 +11 ========================================== + Hits 23921 23930 +9 - Misses 3504 3506 +2 ```

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[github-actions[bot]]

Bencher Report

Branch	3085/merge
Testbed	benchmarking-runner

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Benchmark	Latency	nanoseconds (ns)
from_json_bench	📈 view plot ⚠️ NO THRESHOLD	6,337,100.00
group_by	📈 view plot ⚠️ NO THRESHOLD	476.86
input/args.missing	📈 view plot ⚠️ NO THRESHOLD	22.71
input/args.nested.existing	📈 view plot ⚠️ NO THRESHOLD	42.11
input/args.nested.missing	📈 view plot ⚠️ NO THRESHOLD	36.31
input/args.root	📈 view plot ⚠️ NO THRESHOLD	38.03
input/headers.existing	📈 view plot ⚠️ NO THRESHOLD	32.70
input/headers.missing	📈 view plot ⚠️ NO THRESHOLD	31.73
input/value.missing	📈 view plot ⚠️ NO THRESHOLD	22.75
input/value.nested.existing	📈 view plot ⚠️ NO THRESHOLD	42.29
input/value.nested.missing	📈 view plot ⚠️ NO THRESHOLD	35.73
input/value.root	📈 view plot ⚠️ NO THRESHOLD	39.67
input/vars.existing	📈 view plot ⚠️ NO THRESHOLD	8.69
input/vars.missing	📈 view plot ⚠️ NO THRESHOLD	11.45
synth_nested	📈 view plot ⚠️ NO THRESHOLD	94,616.00
synth_nested_borrow	📈 view plot ⚠️ NO THRESHOLD	41,513.00
test_batched_body	📈 view plot ⚠️ NO THRESHOLD	1,887.10
test_batched_body #2	📈 view plot ⚠️ NO THRESHOLD	1,495,500.00
test_data_loader	📈 view plot ⚠️ NO THRESHOLD	392,560.00
test_handle_request	📈 view plot ⚠️ NO THRESHOLD	130,760.00
test_handle_request_jit	📈 view plot ⚠️ NO THRESHOLD	62,010.00
test_http_execute_method	📈 view plot ⚠️ NO THRESHOLD	15,039.00
with_mustache_expressions	📈 view plot ⚠️ NO THRESHOLD	1,081.50
with_mustache_literal	📈 view plot ⚠️ NO THRESHOLD	688.60

🐰 View full continuous benchmarking report in Bencher

[github-actions[bot]]

Action required: PR inactive for 5 days. Status update or closure in 10 days.

[laststylebender14]

closing this as using lock free data structures didn't solve the actual problem.