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What is monstache?

adoy/monstache — explained in plain English

Analysis updated 2026-07-18 · repo last pushed 2023-09-20

GoAudience · developerComplexity · 3/5DormantSetup · moderate

In one sentence

Monstache is a background service that keeps MongoDB and Elasticsearch automatically in sync, so search results stay fresh whenever your database changes.

Mindmap

mindmap
  root((repo))
    What it does
      Syncs MongoDB to Elasticsearch
      Real time updates
      No manual copying
    Tech stack
      Go
      MongoDB
      Elasticsearch
      Change streams
    Use cases
      Ecommerce search
      SaaS dashboards
      Content search
    Audience
      Backend developers
      Ops teams

Code map

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filefunction / class

What do people build with it?

USE CASE 1

Keep an e-commerce product catalog in MongoDB searchable in real time via Elasticsearch.

USE CASE 2

Power fast filtering on a SaaS dashboard while keeping MongoDB as the primary data store.

USE CASE 3

Add full-text search across millions of articles on a content platform without a custom sync pipeline.

USE CASE 4

Replace a hand-built MongoDB-to-Elasticsearch sync script with a maintained, ready-to-run daemon.

What is it built with?

GoMongoDBElasticsearch

How does it compare?

adoy/monstache42wim/fabio42wim/go-xmpp
LanguageGoGoGo
Last pushed2023-09-202018-02-042020-01-24
MaintenanceDormantDormantDormant
Setup difficultymoderatemoderatemoderate
Complexity3/53/53/5
Audiencedeveloperops devopsdeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · moderate Time to first run · 30min

Requires a running MongoDB replica set (for change streams) and an Elasticsearch instance to sync into.

Copy-paste prompts

Prompt 1
Help me set up monstache to sync my MongoDB collection to Elasticsearch in real time.
Prompt 2
Show me how to configure monstache to watch a specific MongoDB database using change streams.
Prompt 3
Explain how monstache detects inserts, updates, and deletes in MongoDB and pushes them to Elasticsearch.
Prompt 4
Help me run monstache as a background service alongside my existing MongoDB and Elasticsearch setup.

Frequently asked questions

What is monstache?

Monstache is a background service that keeps MongoDB and Elasticsearch automatically in sync, so search results stay fresh whenever your database changes.

What language is monstache written in?

Mainly Go. The stack also includes Go, MongoDB, Elasticsearch.

Is monstache actively maintained?

Dormant — no commits in 2+ years (last push 2023-09-20).

How hard is monstache to set up?

Setup difficulty is rated moderate, with roughly 30min to a first successful run.

Who is monstache for?

Mainly developer.

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