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Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com> Co-authored-by: proposalbot <proposalbot@otc-service.com> Co-committed-by: proposalbot <proposalbot@otc-service.com>
42 lines
2.1 KiB
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42 lines
2.1 KiB
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:original_name: asm_01_0049.html
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.. _asm_01_0049:
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Overview
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========
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Non-intrusive traffic management is a core function of Istio. With traffic management, you only need to focus on your own service logic rather than service access management. Traffic management enables you to:
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- Dynamically modify load balancing policies for cross-service access, such as configuring consistent hashing to forward traffic to specific service pods.
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- Distribute a certain proportion of traffic to a specific version of a service when the service has two online versions.
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- Protect services, for example, limiting the number of concurrent connections and requests, and isolating faulty service pods.
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- Dynamically modify the content of a service or simulate a service running fault.
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ASM provides retry, timeout, connection pool, outlier detection, load balancing, HTTP header, and fault injection functions to meet traffic management requirements in most service scenarios.
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.. table:: **Table 1** Common mesh functions and management roles
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====================== ================= ================
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Mesh Function Management Role
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\ Service Initiator Service Provider
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Route management Y N
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Load balancing Y N
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Tracing analysis Y Y
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Service authentication Y Y
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Observability data Y Y
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Retry Y N
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Rewrite Y N
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Redirection Y N
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Authorization N Y
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Fault injection Y N
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Timeout Y N
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Connection pool Y N
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Outlier detection Y N
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HTTP header Y N
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====================== ================= ================
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Constraints
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-----------
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Traffic management cannot be performed for the service whose configuration diagnosis fails. For details about rectifying faults, see :ref:`Manual Fixing Items <asm_01_0060>` or :ref:`Auto Fixing Items <asm_01_0065>`.
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