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feat: dedicated config processing #6442

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Nov 2, 2023
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feat: dedicated config processing #6442

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3ac01ea
feat: dedicated config processing
jschmid1 Oct 30, 2023
fdcde79
minor formatting edits
lena-larionova Nov 2, 2023
9ba90cf
remove backticks from around hybrid
lena-larionova Nov 2, 2023
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20 changes: 16 additions & 4 deletions app/_src/gateway/production/sizing-guidelines.md
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Expand Up @@ -25,9 +25,10 @@ Consider the following simplified examples, where latency and throughput require

| Size | Number of Configured Entities | Latency Requirements | Throughput Requirements | Usage Pattern |
|---|---|---|---|---|
| Small | < 100 | < 100 ms | < 500 RPS | Dev/test environments; latency-insensitive gateways |
| Medium | < 1000 | < 20 ms | < 2500 RPS | Production clusters; greenfield traffic deployments |
| Large | < 10000 | < 10 ms | < 10000 RPS | Mission-critical clusters; legacy & greenfield traffic; central enterprise-grade gateways |
| Development | < 100 | < 100 ms | < 500 RPS | Dev/test environments; latency-insensitive gateways |
| Small | < 1000 | < 20 ms | < 2500 RPS | Production clusters; greenfield traffic deployments |
| Medium | < 10000 | < 10 ms | < 10000 RPS | Mission-critical clusters; legacy & greenfield traffic; central enterprise-grade gateways |
| Large | < 50000+ | < 10 ms | < 10000 RPS | Mission-critical clusters; legacy & greenfield traffic; central enterprise-grade gateways |

### Database resources

Expand Down Expand Up @@ -169,6 +170,17 @@ the better choice, as it provides near-unlimited throughput capacity. In this
scenario, adding more cache memory would not increase maximum throughput by
much.

{% if_version gte:3.5.x %}
When {{site.base_gateway}} is operating in `hybrid` mode with a large number of configuration
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entities (routes, services etc.), it can benefit from the "Dedicated Configuration Processing" option.
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When enabled, certain CPU intensive steps of the data plane reconfiguration operation are offloaded
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to a dedicated worker process. This reduces proxy latency during reconfigurations at the cost of a
slight increase in memory usage. The benefits of this mechanism are most apparent with configurations
consisting of more than a thousand configuration entities. See the
[configuration reference]:(/gateway/{{page.kong_version}}/reference/configuration/#dedicated_config_processing)
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{% endif_version %}

Performance benchmarking and optimization as a whole is a complex exercise that
must account for a variety of factors, including those external to
{{site.base_gateway}}, such as the behavior of upstream services, or the health
Expand All @@ -187,7 +199,7 @@ thousands of Routes with minimal impact to latency as a result of request route
evaluation.

* **Number of configured Consumers and Credentials**: Consumer and credential
data is stored in {{site.base_gateway}}'s datastore. {{site.base_gateway}}
data is stored in {{site.base_gateway}}'s datastore. {{site.base_gateway}}
caches this data in memory to reduce database load and
latency during request processing. Increasing the count of Consumers and
Credentials requires more memory available for {{site.base_gateway}} to hold
Expand Down