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Update cache SPI and resource serialization #92

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@wzy1935 wzy1935 commented Jul 15, 2024

Closes #67

Updated the cache SPI and added serialization for the Resource class.

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Thank you @wzy1935 ! I did a first round of comments

src/main/java/io/vertx/httpproxy/spi/cache/Cache.java Outdated Show resolved Hide resolved
src/main/java/io/vertx/httpproxy/cache/CacheOptions.java Outdated Show resolved Hide resolved
src/main/java/io/vertx/httpproxy/impl/CacheImpl.java Outdated Show resolved Hide resolved
src/main/java/io/vertx/httpproxy/spi/cache/Resource.java Outdated Show resolved Hide resolved
@wzy1935 wzy1935 mentioned this pull request Jul 24, 2024
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Thank you @wzy1935 , I've added another batch of comments

Can you also add a test that verifies the behavior of a shared cached? That is, if it has stored a response for a one reverse proxy instance, another proxy instance will not have to contact the backend.

src/main/java/io/vertx/httpproxy/cache/CacheOptions.java Outdated Show resolved Hide resolved
src/main/java/io/vertx/httpproxy/HttpProxy.java Outdated Show resolved Hide resolved
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Thank you @wzy1935 ! Some more comments

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Can you please rebase this PR? Thank you

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Thank you @wzy1935 , another batch of reviews

src/main/java/io/vertx/httpproxy/HttpProxy.java Outdated Show resolved Hide resolved
src/main/java/io/vertx/httpproxy/cache/CacheOptions.java Outdated Show resolved Hide resolved

@Override
public Future<Void> close() {
return Future.succeededFuture();
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We didn't talk about clearing the map on close, did we? Would it be necessary in your opinion?

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Personally I also think there's no need, but when I called the vertx.createSharedResource() in ReverseProxy#newCache, there's a closeFuture that I don't know how to deal with it.

Maybe you could check if the following would work? I think I should change to this version:

  // ReverseProxy#newCache
  public Cache newCache(CacheOptions options, Vertx vertx) {
    if (options.getShared()) {
      CloseFuture closeFuture = new CloseFuture();
      return ((VertxInternal) vertx).createSharedResource("__vertx.shared.proxyCache", options.getName(), closeFuture, (cf_) -> {
        Cache cache = new CacheImpl(options);
        return cache;
      });
    }
    return new CacheImpl(options);
  }

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The close future is not bound to anything, neither Vert.x nor the context. Take a look at how Vert.x creates shared http clients, or shared Vert.x SQL Clients, shared Kafka Producers

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Introduce a cache storage SPI
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