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| author |  David G. Quintas <dgq@google.com> | 2016-02-10 22:54:36 -0800 |
|---|---|---|
| committer | David G. Quintas <dgq@google.com> | 2016-02-10 22:54:36 -0800 |
| commit | 8729d03fdf47b535012312fc4b983b0b27b49918 (patch) | |
| tree | 763ef17f416d038ae8b68b721f08b7955b03a466 /doc/load-balancing.md | |
| parent | 8003d767b4391d757c808cebf529ea3add23c319 (diff) | |
Update load-balancing.md
Formatting
Diffstat (limited to 'doc/load-balancing.md')
| -rw-r--r-- | doc/load-balancing.md | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/doc/load-balancing.md b/doc/load-balancing.md index ffae33fb04..b1a27057ab 100644 --- a/doc/load-balancing.md +++ b/doc/load-balancing.md @@ -1,17 +1,17 @@ Load Balancing in gRPC ======================= -## Objective +# Objective To design a load balancing API between a gRPC client and a Load Balancer to instruct the client how to send load to multiple backend servers. -## Background +# Background Prior to any gRPC specifics, we explore some usual ways to approach load balancing. -## Proxy Model +### Proxy Model Using a proxy provides a solid trustable client that can report load to the load balancing system. Proxies typically require more resources to operate since they @@ -21,7 +21,7 @@ latency to the RPCs. The proxy model was deemed inefficient when considering request heavy services like storage. -## Balancing-aware Client +### Balancing-aware Client This thicker client places more of the load balancing logic in the client. For example, the client could contain many load balancing policies (Round Robin, @@ -40,7 +40,7 @@ It would also significantly complicate the API: the new design hides the load balancing complexity of multiple layers and presents it as a simple list of servers to the client. -## External Load Balancing Service +### External Load Balancing Service The client load balancing code is kept simple and portable, implementing straightforward algorithms (ie, Pick First, Round Robin) for server selection. @@ -52,7 +52,7 @@ unavailability or health issues. The load balancer will make any necessary complex decisions and inform the client. The load balancer may communicate with the backend servers to collect load and health information. -## Proposed Architecture +# Proposed Architecture The gRPC load balancing approach follows the third approach, by having an external load balancer which provides simple clients with a list of servers. |