Merge pull request 0xPolygon#636 from kasrakhosravi/main

docs: erpc

Author: hsutaiyu

docs/tools/rpc-proxy-caching/erpc.md

@@ -0,0 +1,71 @@
+!!! info "Content disclaimer"
+
+    Please view the third-party content disclaimer [here](https://github.com/0xPolygon/polygon-docs/blob/main/CONTENT_DISCLAIMER.md).
+
+
+# Polygon RPC Proxy and Caching
+
+[eRPC](https://erpc.cloud/) is a fault-tolerant EVM RPC proxy and re-org aware permanent caching solution. It is built with read-heavy use-cases in mind such as data indexing and high-load frontend usage.
+
+- [github](https://github.com/erpc/erpc)<br/>
+- [docs](https://docs.erpc.cloud/)<br/>
+- [telegram](https://t.me/erpc_cloud)<br/>
+
+![Architecture](https://github.com/erpc/erpc/raw/main/assets/hla-diagram.svg)
+
+<br />
+
+# Quickstart
+
+1. Create your [`erpc.yaml`](https://docs.erpc.cloud/config/example) configuration file:
+```yaml title="erpc.yaml"
+logLevel: debug
+projects:
+  - id: main
+    upstreams:
+      # You don't need to define architecture (e.g. evm) or chain id (e.g. 137)
+      # as they will be detected automatically by eRPC.
+      - endpoint: https://polygon-mainnet.blastapi.io/xxxx
+      - endpoint: evm+alchemy://xxxx-my-alchemy-api-key-xxxx
+```
+  See [a complete config example](https://docs.erpc.cloud/config/example) for inspiration.
+
+2. Use the Docker image:
+```bash
+docker run -v $(pwd)/erpc.yaml:/root/erpc.yaml -p 4000:4000 -p 4001:4001 ghcr.io/erpc/erpc:latest
+```
+
+3. Send your first request:
+```bash
+curl --location 'http://localhost:4000/main/evm/137' \
+--header 'Content-Type: application/json' \
+--data '{
+    "method": "eth_getBlockByNumber",
+    "params": [
+        "0x397f96e",
+        false
+    ],
+    "id": 9199,
+    "jsonrpc": "2.0"
+}'
+```
+
+4. Bring up monitoring stack (Prometheus, Grafana) using `docker-compose`:
+```bash
+# clone the repo if you haven't
+git clone https://github.com/erpc/erpc.git
+cd erpc
+
+# bring up the monitoring stack
+docker-compose up -d
+```
+
+5. Open Grafana at [http://localhost:3000](http://localhost:3000) and login with the following credentials:
+  ```text
+  username: admin
+  password: admin
+  ```
+
+6. Send more requests and watch the metrics being collected and visualized in Grafana.
+
+![eRPC Grafana Dashboard](https://docs.erpc.cloud/_next/image?url=%2F_next%2Fstatic%2Fmedia%2Fmonitoring-example-erpc.2cb040a1.png&w=3840&q=75)

mkdocs.yml

@@ -424,6 +424,8 @@ nav:
       - Chain indexer framework:
           - Overview: tools/chain-indexer-framework/overview.md
           - Usage: tools/chain-indexer-framework/usage.md 
+      - RPC Proxy:
+          - eRPC: tools/rpc-proxy-caching/erpc.md
       - Data:
           - Alchemy subgraphs: https://docs.alchemy.com/docs/how-to-build-and-deploy-a-subgraph-on-polygon-zkevm-using-alchemy-subgraphs
           - Covalent: tools/data/covalent.md