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new 2910484 Update ttl.md to add another 2 types of model relating to
recordTTL (#7760)
2910484 is described below
commit 29104848a6d65008fb7e00c5b4f50c41e67945a0
Author: 吴晟 Wu Sheng <[email protected]>
AuthorDate: Wed Sep 22 09:13:10 2021 +0800
Update ttl.md to add another 2 types of model relating to recordTTL (#7760)
---
docs/en/setup/backend/ttl.md | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/docs/en/setup/backend/ttl.md b/docs/en/setup/backend/ttl.md
index 779e4e8..1fc599f 100644
--- a/docs/en/setup/backend/ttl.md
+++ b/docs/en/setup/backend/ttl.md
@@ -1,7 +1,7 @@
# TTL
-In SkyWalking, besides metadata, there are two types of observability data:
-1. Record: Includes trace and alarm. Log may also be included in the future.
-1. Metric: Includes percentile, heat map, success rate, cpm (rpm), etc.
+In SkyWalking, there are two types of observability data:
+1. Records include traces, logs, topN sampled statements and alarm.
`recordDataTTL` applies to **record** data.
+1. Metrics include all metrics for service, instance, endpoint, and topology
map. Metadata(lists of services, instances, or endpoints) also belongs to
metrics. `metricsDataTTL` applies to **Metrics** data.
These are the settings for the different types:
```yaml
@@ -10,5 +10,3 @@ These are the settings for the different types:
metricsDataTTL: ${SW_CORE_METRICS_DATA_TTL:7} # Unit is day
```
-- `recordDataTTL` applies to **record** data, including tracing and alarm.
-- `metricsDataTTL` applies to all metrics, including the metrics for service,
instance, endpoint, and topology map.
