Getting Started with Istio Service Mesh by Rahul Sharma & Avinash Singh

Author:Rahul Sharma & Avinash Singh
Language: eng
Format: epub
ISBN: 9781484254585
Publisher: Apress

Note

It is important to note that the connection pool is monitored by the Envoy proxy. Envoy initiates the following circuit breakers if the configured limits are breached:

upstream_cx_overflow: This circuit breaker is thrown when a service in the cluster breaches the maximum number of connections. This is often applicable to TCP and HTTP/1 services. Since HTTP/2 reuses the same connection, the limit is not applicable to it.

upstream_rq_pending_overflow: This circuit breaker is thrown when a service in the cluster makes more HTTP requests than the configured limits. This is often applicable to HTTP/2.

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