diff --git a/db/sql/postgres/ext/pro/pgpro-otel-collector.txt b/db/sql/postgres/ext/pro/pgpro-otel-collector.txt
new file mode 100644
index 000000000..ba18c554b
--- /dev/null
+++ b/db/sql/postgres/ext/pro/pgpro-otel-collector.txt
@@ -0,0 +1,4 @@
+https://postgrespro.ru/docs/otelcol/0.3/index
+
+2025
+https://habr.com/ru/companies/postgrespro/articles/878640/
diff --git a/db/sql/postgres/feature/internals/vacuum/presentations.txt b/db/sql/postgres/feature/internals/vacuum/presentations.txt
new file mode 100644
index 000000000..affdd47d3
--- /dev/null
+++ b/db/sql/postgres/feature/internals/vacuum/presentations.txt
@@ -0,0 +1,3 @@
+2019
+PGConf - Akentieva - Avtovacuum of 38:13
+    https://www.youtube.com/watch?v=2vplpVg2FkU
diff --git a/devops/tracing/opentelemetry.txt b/devops/tracing/opentelemetry.txt
index 4b02f0e63..f249740a0 100644
--- a/devops/tracing/opentelemetry.txt
+++ b/devops/tracing/opentelemetry.txt
@@ -6,7 +6,10 @@ https://opentelemetry.io/docs/
 https://opentelemetry.io/docs/instrumentation/
 https://opentelemetry.io/docs/instrumentation/java/getting-started/
 
+2025
+https://habr.com/ru/companies/postgrespro/articles/883632/
 2024
+https://tproger.ru/articles/chto-takoe-opentelemetry-i-kak-ona-mozhet-uluchwit-kachestvo-vawih-servisov
 YoungParker - Learning OpenTelemetry
     97F8184BCB83534B962730DDF0E43420
     A83C1270C8B66CE620D6B1DF95CA4752
@@ -16,3 +19,5 @@ YoungParker - Learning OpenTelemetry
 https://apisix.hashnode.dev/end-to-end-tracing-opentelemetry
 https://dev.to/apisix/end-to-end-tracing-with-opentelemetry-a17
     https://github.com/nfrankel/opentelemetry-tracing
+2021
+https://habr.com/ru/companies/ru_mts/articles/537892/