quantopian/zipline

Can zipline ingest data incrementally?

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#2198 opened on May 31, 2018

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 (3 comments) (4 reactions) (0 assignees)Python (17,019 stars) (4,633 forks)batch import
Data BundleHelp Wanted

Description

Dear Zipline Maintainers,

every time I ingest data, zipline seems download all data and process ingest, does it has approach to execute incremental update?

Contributor guide

Tech stack
pythonpandasnumpy
Domain
data
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
PythonZipline fundamentalsData pipeline concepts
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Examine the existing data ingestion pipeline in zipline, particularly the 'zipline.data' and 'zipline.ingest' modules. Investigate how data bundles are currently downloaded and processed, and identify whether any incremental update mechanisms exist (e.g., using start/end dates). Propose a design for incremental ingestion, possibly by checking for existing data and only downloading new records. Reference the official Zipline documentation and existing bundle examples.