The Context: The Invisible Ingestion Wall

Most ingestion pipelines fail because they treat data as "text." In high-performance systems, text doesn't exist—only bytes and CPU cycles. While building Forge-Core, I realized that standard fgets or sscanf patterns are a massive "tax" on the CPU.

The Bottleneck: Branch Misprediction & Buffer Bloat

My early attempts hit a ceiling. Even with multi-threading, I couldn't break 50M Rows/Sec. The profiler (perf) exposed the truth:

Instruction Flow Stalls: The CPU was guessing wrong on comma locations.

Memory Redundancy: Data was being copied three times before it was even validated.

The Pivot: SIMD Structural Indexing

To break 200M, I had to stop "parsing" and start "indexing." I moved the logic from scalar loops into AVX2 SIMD Bitmasks.

The Core Kernel Logic:

Instead of looking for a comma one byte at a time, we load 32 bytes and create a bitmask of all structural delimiters simultaneously.

// Load 32-byte chunk into YMM register

__m256i chunk =…