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Preface

  • I need to store a field represented by an array of bytes in Elasticsearch (as is, no size increasing).
  • In Elasticsearch, there is a field type called binary (docs). It converts an array of bytes to the Base64 format.
  • I know that when encoding an array of bytes in the form of Base64, the data size increases by about 33 percent (related question).

Question

How can I store binary values efficiently in Elasticsearch, storage-wise, without unnecessary increasing?

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