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A lightweight full-text index server with a focus on speed and efficiency.
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Fist - (F)ull-(t)ext (i)ndex (s)erver

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Fist is a fast, lightweight, full-text search and index server. Fist stores all information in memory making lookups very fast while also persisting the index to disk. The index can be accessed over a TCP connection and all data returned is valid JSON.

Fist is still heavily under development. Not all features are implemented or stable yet.


Most software that requires full-text search is not really that complicated and does not need an overly complex solution. Using a complex solution often times leads to headaches. Setting up Elasticsearch when Elasticsearch really isn't needed for the particular application costs more time and money to maintain.

This is where Fist comes in. Fist is intended to be extremely easy to deploy and integrate into your application. Just start the Fist server and start sending commands.

Build and start Fist server

Fist started at localhost:5575

Run Tests

make test

Example Usage

Commands can be sent over a TELNET connection


telnet localhost 5575
Trying ::1...
telnet: connect to address ::1: Connection refused
Connected to localhost.
Escape character is '^]'.
INDEX document_1 Some text that I want to index
Text has been indexed
INDEX document_2 Some other text that I want to index
Text has been indexed
SEARCH I want to index
DELETE I want to index
Key Deleted
SEARCH I want to index

Docker Usage

# Build image
docker build . -t fist:latest

# Run tests
docker run --rm -it fist test

# Run server and make volume for database
docker run -d --init --rm -p 5575:5575 -v /var/local/lib/fist fist

Key Features

  • Full text indexing and searching
  • Persisting data to disk
  • Compression of index file
  • Accessible over TCP connection

Client Libraries





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