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Posted to notifications@skywalking.apache.org by wu...@apache.org on 2020/08/13 00:03:23 UTC
[skywalking-website] branch master updated: Update image graph link.
This is an automated email from the ASF dual-hosted git repository.
wusheng pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/skywalking-website.git
The following commit(s) were added to refs/heads/master by this push:
new e74bb56 Update image graph link.
e74bb56 is described below
commit e74bb56b0022b9ba5b7aa9b7f93c09d3d3fd9e84
Author: Wu Sheng <wu...@foxmail.com>
AuthorDate: Thu Aug 13 08:03:08 2020 +0800
Update image graph link.
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.../endpoint-dependency-v8.png | Bin 0 -> 397801 bytes
.../2020-08-11-observability-at-scale/topology-v8.png | Bin 0 -> 577557 bytes
docs/blog/2020-08-11-observability-at-scale.md | 4 ++--
3 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/docs/.vuepress/public/static/blog/2020-08-11-observability-at-scale/endpoint-dependency-v8.png b/docs/.vuepress/public/static/blog/2020-08-11-observability-at-scale/endpoint-dependency-v8.png
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diff --git a/docs/.vuepress/public/static/blog/2020-08-11-observability-at-scale/topology-v8.png b/docs/.vuepress/public/static/blog/2020-08-11-observability-at-scale/topology-v8.png
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diff --git a/docs/blog/2020-08-11-observability-at-scale.md b/docs/blog/2020-08-11-observability-at-scale.md
index 98d8554..f788076 100644
--- a/docs/blog/2020-08-11-observability-at-scale.md
+++ b/docs/blog/2020-08-11-observability-at-scale.md
@@ -30,11 +30,11 @@ Metrics rely on mathematical theories and calculations. Percentile is a good mea
The service topology map is required from Ops and SRE teams for the NOC dashboard and confirmation of system data flow. SkyWalking uses the [STAM (Streaming Topology Analysis Method)](https://wu-sheng.github.io/STAM/) to analyze topology from the traces, or based on ALS (Envoy Access Log Service) in the service mesh environment. This topology and metrics of nodes (services) and lines (service relationships) can't be pulled from simple metrics SDKs.
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As with fixing the limitation of endpoint metrics collection, SkyWalking needs to do endpoint dependency analysis from trace data too. Endpoint dependency analysis provides more important and specific information, including upstream and downstream. Those dependency relationships and metrics help the developer team to locate the boundaries of a performance issue, to specific code blocks.
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### **Pre-calculation vs. query stage calculation?**