mapbox / mapbox/mapbox-maps-ios

Failed with Status 429 on Offline download

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#2,133 11 comments 0 reactions 0 assignees View on GitHub

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auto-triaged bug :beetle:
Dominant language
Swift
Stars
601
Forks
196
PR merge metrics
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Description

Offline downloads are taking a really long time. Even the shortest downloads are very slow. I am seeing a lot of warings like this:

[Warning, tile_store]: id=324, tag=offline, variant=maps:hiiker-maps.5d86w3u0/ coord=11[11->14]/1000/685 : failed with HTTP status 429 after 1.28213s; delaying for 58.8493s after 1 attempts; 4 downloads waiting

Would you have any insight into what is causing this, and how I can prevent it?

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing an offline download and tracing the tile_store warnings showing HTTP 429 responses and long delays. Inspect how offline requests are scheduled and retried; done means identifying the cause of the rate limiting and a concrete way to prevent or reduce these failures.

Written by the indexing model from the issue text.

Assessment

Tech stack
swift
Domain
mobile, networking
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
35/100

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