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View Code? Open in Web Editor NEWA working example of microservice architecture implementation using nestjs framework
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[question] how to use graphql in microservice?
sharing code between microservices
How do we share code if something like the file below is used by multiple microservices?
Also will npm workspace be used when it is available in node 16 LTS?
Anyway thank you for this very informative example...
Connecting to gateway scalability issue
It seems all the requests are going to be sent to the gateway service. Since one of the issues that microservices resolve is scalability, in this case, it seems we should vertically scale the server (not horizontally).
Can the front side talk to each microservice instead of the gateway? Any idea?
unexpected character "<" in variable name
Initial installation of the platform gives me an issue.
Comand:
docker network create infrastructure && cp .env.example .env && docker-compose up -d
Issue:
unexpected character "<" in variable name near "<[email protected]>\n"
MongoNetworkError: failed to connect to server
➜ cd ./gateway && npm install && npm run test
> [email protected] test
> jest --config ./test/jest-e2e.json --detectOpenHandles
(node:32062) DeprecationWarning: current Server Discovery and Monitoring engine is deprecated, and will be removed in a future version. To use the new Server Discover and Monitoring engine, pass option { useUnifiedTopology: true } to the MongoClient constructor.
(Use `node --trace-deprecation ...` to show where the warning was created)
FAIL test/task.e2e-spec.ts
● Tasks (e2e) › /users/ (POST) - should create a user for checking tasks api
MongoNetworkError: failed to connect to server [db:27017] on first connect [MongoNetworkError: getaddrinfo ENOTFOUND db
at connectionFailureError (../node_modules/mongodb/lib/core/connection/connect.js:340:14)
at Socket.<anonymous> (../node_modules/mongodb/lib/core/connection/connect.js:310:16)
errno: -3008,
code: 'ENOTFOUND',
syscall: 'getaddrinfo',
hostname: 'db'
}]
at Pool.<anonymous> (../node_modules/mongodb/lib/core/topologies/server.js:438:11)
at ../node_modules/mongodb/lib/core/connection/pool.js:562:14
at ../node_modules/mongodb/lib/core/connection/pool.js:995:11
at ../node_modules/mongodb/lib/core/connection/connect.js:32:7
at callback (../node_modules/mongodb/lib/core/connection/connect.js:280:5)
at Socket.<anonymous> (../node_modules/mongodb/lib/core/connection/connect.js:310:7)
➜ ls ./node_modules/mongodb/lib/core/connection/connect.js
./node_modules/mongodb/lib/core/connection/connect.js
➜ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
nestjs-microservices-example_task latest 8f6ea10c6c9c 2 hours ago 301MB
nestjs-microservices-example_token latest d91cd08050e6 2 hours ago 304MB
nestjs-microservices-example_user latest 4ea9ae968a07 2 hours ago 305MB
nestjs-microservices-example_permission latest 45fc5c5b4651 2 hours ago 287MB
nestjs-microservices-example_mailer latest bc43a7509bca 2 hours ago 312MB
nestjs-microservices-example_gateway latest be198aa8b10e 2 hours ago 376MB
mongo 3.7 3db1239d511b 3 years ago 365MB
➜ docker network ls
NETWORK ID NAME DRIVER SCOPE
c1f91c7540aa bridge bridge local
cd35c2d8606f host host local
e202db18ab24 infrastructure bridge local
bb8f103e8d56 nestjs-microservices-example_backend bridge local
ae658c26cd1e none null local
➜ ls -l
total 1224
-rw-r--r-- 1 monolithed staff 188 26 июл 10:06 Dockerfile
-rw-r--r-- 1 monolithed staff 84 26 июл 10:06 nest-cli.json
drwxr-xr-x 524 monolithed staff 16768 26 июл 11:35 node_modules
-rw-r--r-- 1 monolithed staff 598555 26 июл 11:35 package-lock.json
-rw-r--r-- 1 monolithed staff 1555 26 июл 11:35 package.json
drwxr-xr-x 9 monolithed staff 288 26 июл 10:06 src
drwxr-xr-x 11 monolithed staff 352 26 июл 10:06 test
-rw-r--r-- 1 monolithed staff 97 26 июл 10:06 tsconfig.build.json
-rw-r--r-- 1 monolithed staff 362 26 июл 10:06 tsconfig.json
-rw-r--r-- 1 monolithed staff 503 26 июл 10:06 tslint.json
Not able to connect with microservice when I deploye it with docker
It throws error that 2023-03-31 13:09:51 [Nest] 47 - 03/31/2023, 7:39:51 AM ERROR [ExceptionsHandler] connect ECONNREFUSED 172.23.0.8:8002
2023-03-31 13:09:51 Error: connect ECONNREFUSED 172.23.0.8:8002
2023-03-31 13:09:51 at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1144:16)
whenver I try to hit any endpoint
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