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Get Serialized state of the dictionary #313

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opened 2026-01-29 20:41:51 +00:00 by claunia · 1 comment
claunia commented 2026-01-29 20:41:51 +00:00
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Originally created by @IhsenCharfi on GitHub (Apr 15, 2020).

Hey , I want to use brotli for stream compression in a go lang project.

I have a use case when i need to send compressed data between tcp server/client. I want to get a serialized state of the dynamic dictionary created to exchange msg between client and server. So that, after, I will be able to de save the state and continuen using the dictionary created for further compression.

Is this feature/api available within this library ?

If no, I want to add it to this library, so from where should I start ? Can you give me some hints ?

Are you interested in this use case to add it to the library ?

Originally created by @IhsenCharfi on GitHub (Apr 15, 2020). Hey , I want to use brotli for stream compression in a go lang project. I have a use case when i need to send compressed data between tcp server/client. I want to get a serialized state of the dynamic dictionary created to exchange msg between client and server. So that, after, I will be able to de save the state and continuen using the dictionary created for further compression. Is this feature/api available within this library ? If no, I want to add it to this library, so from where should I start ? Can you give me some hints ? Are you interested in this use case to add it to the library ?
claunia commented 2026-01-29 20:41:52 +00:00
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@eustas commented on GitHub (Jan 6, 2023):

Brotli is build on LZ77 ideas. Unlike LZ78 / LZW there is no "dictionary" built in the process of compression. The input data is a source of references (implicit dictionary). To improve compression there is a way to "virtually" prepend some data. Please see -D CLI option, and Brotli*Dictionary* methods documentation.

@eustas commented on GitHub (Jan 6, 2023): Brotli is build on LZ77 ideas. Unlike LZ78 / LZW there is no "dictionary" built in the process of compression. The input data is a source of references (implicit dictionary). To improve compression there is a way to "virtually" prepend some data. Please see `-D` CLI option, and `Brotli*Dictionary*` methods documentation.
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Reference: starred/brotli#313
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