memfs: Speed up store.put and removeAll#9
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store.put previously called sort.Strings on the entire keys slice for every insert, making bulk loads O(n^2 log n). Replace it with a SearchStrings + slice insert that is O(n) per put. removeAll did a linear scan to find the end of the prefix range; replace it with a binary search since the slice is already sorted. Behavior is unchanged; add a benchmark for store.put so future regressions are visible.
mojatter
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store.put previously called sort.Strings on the entire keys slice for every insert, making bulk loads O(n^2 log n). Replace it with a SearchStrings + slice insert that is O(n) per put. removeAll did a linear scan to find the end of the prefix range; replace it with a binary search since the slice is already sorted.
Behavior is unchanged; add a benchmark for store.put so future regressions are visible.
BenchmarkStore_put results: