Optimize memory usage

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 50.00000% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 71.57%. Comparing base (3eab031) to head (fc54c64).

Files	Patch %	Lines
src/core/base.cc	50.00%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #5265 +/- ## ========================================== + Coverage 71.54% 71.57% +0.02% ========================================== Files 105 105 Lines 16084 16086 +2 Branches 2972 2973 +1 ========================================== + Hits 11507 11513 +6 + Misses 4523 4518 -5 - Partials 54 55 +1 ```

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