// dictionary size is ~100 kB, but 1 kB seems to actually compress better for us,
// and decompress just as fast.
DictionaryBuilder builder(/*blocks_to_keep=*/1000, block_size);
// dictionary size is ~100 kB, but 1 kB seems to actually compress better for us,
// and decompress just as fast.
DictionaryBuilder builder(/*blocks_to_keep=*/1000, block_size);