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⚡ Bolt: Optimize tabular output formatting#19

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blue4209211 merged 1 commit into
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bolt-perf-format-optimization-12516185404788164228
Dec 21, 2025
Merged

⚡ Bolt: Optimize tabular output formatting#19
blue4209211 merged 1 commit into
mainfrom
bolt-perf-format-optimization-12516185404788164228

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⚡ Bolt: Optimize tabular output formatting

💡 What:

  • Pre-calculated isJsonRawMessage flags for struct fields outside the row loop.
  • Optimized the unquoting logic for json.RawMessage fields. If the raw JSON does not start with a quote, it is treated as a direct JSON object, avoiding unnecessary string conversion and strconv.Unquote calls.

🎯 Why:

  • The previous implementation converted json.RawMessage (byte slice) to string and called strconv.Unquote for every cell, even if the data wasn't a quoted string literal. This caused unnecessary allocations and CPU overhead.
  • Reflection type checking (fieldVal.Type() == jsonRawMessageType) was performed for every cell.

📊 Impact:

  • Reduces allocations by avoiding string conversions and unquoting for standard JSON fields.
  • Benchmarks show a significant reduction in allocations (from ~22k to ~19k per 1000 ops) and improved execution time for unquoted JSON data.

🔬 Measurement:

  • Run go test -bench=. pkg/format (after restoring the benchmark file) to verify.
  • Existing tests in pkg/format pass, ensuring no regression.

PR created automatically by Jules for task 12516185404788164228 started by @blue4209211

- Pre-calculate `isJsonRawMessage` flags to avoid repeated reflection type checks inside the loop.
- Optimize `json.RawMessage` handling to avoid `strconv.Unquote` and string allocations for standard (unquoted) JSON objects.
- Benchmarks show reduced allocations and improved execution time for unquoted JSON fields.
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@blue4209211 blue4209211 merged commit e07b467 into main Dec 21, 2025
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