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The stored log files are compressed using GZip and must be decompressed before opening. Part rotation: Logs are written into part files that are closed and uploaded when any of the following occurs:
  • The part reaches 2 GB in size, or
  • The part reaches 5,000,000 lines, or
  • 120 minutes (2 hours) have passed since the part was opened, or
  • The part has had no writes for 1 hour, or
  • Midnight UTC (the current part is closed and a new day starts).
So multiple parts per day are possible, and each part is uploaded shortly after it is closed. The first part of each UTC day has index 0; subsequent parts that day use index 1, 2, and so on. Each filename includes a unique random suffix (8 hex characters) so every part is distinct in storage and uploads never overwrite each other. Because the pipeline can run on multiple log processing worker nodes, each worker writes and uploads its own parts. The filename includes a worker ID (server ID) so you can tell which log processing worker produced which file. The logs are stored in the selected Edge Storage zone under the following path format: 
pullzone-logs/<pullzone-name>/<YYYY>/<MM>/<dd>_<workerId>-<part-index>-<rand>.gzip
  • <pullzone-name> — The pull zone’s bucket name (storage location).
  • <YYYY>/<MM>/<dd> — UTC date of the log data.
  • <workerId> — ID of the log processing worker node (server) that wrote the file.
  • <part-index> — Zero-based index for that worker on that day (0, 1, 2, …).
  • <rand> — 8-character hex suffix that uniquely identifies the part file and ensures uploads never overwrite each other in storage.
Example: pullzone-logs/myzone/2026/03/07_100-0-a1b2c3d4.gzip is the first part for March 7, 2026 from worker 100.
The Pull Zone logs are stored in the Edge Storage which might be exposed to the world through any connected Pull Zone. We strongly recommend using a separate Edge Storage zone to keep the log files to prevent any unauthorized access.

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How to configure Permanent Log Storage?

To enable Permanent Log Storage you can follow the following steps:
  1. Visit your Pull Zone details page
  2. Open the Security panel in the left-side menu
  3. Open the Logging panel inside of the Security panel
  4. Make sure that the Enable Logging feature is enabled
  5. Enable the Enable Permanent Storage feature
  6. Select the desired Edge Storage zone that will contain your log files
  7. Click on the Save Storage Configuration button
  8. Check the Storage Zone the next day to find your log files