diff --git a/chapitre-17/retention-policy.influx b/chapitre-17/retention-policy.influx
new file mode 100644
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+++ b/chapitre-17/retention-policy.influx
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+ALTER RETENTION POLICY autogen ON prometheus DURATION 1d SHARD DURATION 1h
+
+CREATE RETENTION POLICY "1m" ON prometheus DURATION 15d REPLICATION 1
+CREATE CONTINUOUS QUERY "1m" ON prometheus BEGIN SELECT max(value), mean(value), min(value), sum(value) INTO prometheus."1m".:MEASUREMENT FROM prometheus../.*/ GROUP BY time(1m), * END
+
+CREATE RETENTION POLICY "5m" ON prometheus DURATION 63d REPLICATION 1
+CREATE CONTINUOUS QUERY "5m" ON prometheus BEGIN SELECT max(value), mean(value), min(value), sum(value) INTO prometheus."5m".:MEASUREMENT FROM prometheus../.*/ GROUP BY time(5m), * END
+
+CREATE RETENTION POLICY "1h" ON prometheus DURATION 455d REPLICATION 1
+CREATE CONTINUOUS QUERY "1h" ON prometheus BEGIN SELECT max(value), mean(value), min(value), sum(value) INTO prometheus."1h".:MEASUREMENT FROM prometheus../.*/ GROUP BY time(1h), * END