FAQ¶

Billing Logic¶

What is the difference in billing logic between forwarding data to external storage and forwarding to TrueWatch internal storage?

The billing statistics dimensions are different:

Key Differences:

• External Storage: Billed based on daily new forwarding traffic, independent of data storage policies.
• Internal Storage: Billed based on the current saved data capacity (similar to storage rental fees).

Is there any delay in data forwarding? For example, will data generated on the 1st be forwarded only when the storage policy expires (e.g., on the 5th)?

There is no delay. Data forwarding is performed in real-time:

• The forwarding process is triggered when data is generated (on the 1st).
• Data can generally be queried in the target storage within about ten minutes after configuring the rule.
• It is completely independent of the log storage policy (e.g., 3 days), and the two have separate data explorer entries.

Forwarding Mechanism¶

What is the rule for the deletion time point after the log storage policy expires?

Data is deleted uniformly in the early morning of the day after expiration.

Scenario Example: Data written at 12:00 on the 1st, with a 14-day storage policy

• Deletion Time: Data from the 1st is deleted uniformly in the early morning of the 16th (not deleted in real-time at 12:00 on the 15th).
• Reason: To ensure users can still view a complete 14-day historical data window throughout the entire 15th.

Data Lifecycle¶

How are historical data deleted after modifying the storage policy?

They are deleted in a one-time batch (not gradually).

Scenario Example:

• Writing starts on the 1st, initial policy is 14 days.
• On the 15th day, the policy is changed to 7 days.

Data from days 1-6 will be cleaned up in one go during the next unified scheduling, and will not be deleted day by day according to the original policy.

Why is there a huge cost difference between forwarding data to external OSS and forwarding to TrueWatch internal storage?

The billing models are fundamentally different:

• External Storage: You only pay for the daily new forwarding volume (traffic fee), suitable for long-term archiving.
• Internal Storage: You pay a daily fee for the current full volume of stored data (storage rental fee), suitable for short-term queries.

The two have different pricing systems. External storage has a higher unit price based on traffic (¥0.6-1.6/GB), while internal storage has a lower unit price based on storage volume (¥0.007/GB). Choose the optimal solution based on data retention period and access frequency.