iBaryo / js-perf-lecture

Performance fun

Memory Management

Memory Access

Bitwise operator

• binary numbers
• bitwise operators
  • shift left <<
  • AND &
  • OR |
• example: bitwise vs memory access

Data Locality

• CPU cache
• cache hit
• example: local vs far access

Memory Allocation

• naive allocation
• create and throw
• object pool
• (js only) object literals mappings

Event Management

• event streams
• patterns:
  • debounce
  • throttle