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章节NATS 文档（英文原版）

Using NATS

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  1. 01 NATS Tools Using NATS from client application The most common form of connecting to the NATS messaging system will be ... 10 小时前
  2. 02 nats A command line utility to interact with and manage NATS. This utility replaces various past tools that were... 1 天前
  3. 03 nats bench NATS is fast and lightweight, and places a priority on performance. The nats CLI tool can, amongst many ot... 10 小时前
  4. 04 nk nk is a command line tool that generates nkeys. NKeys are a highly secure public-key signature system base... 1 天前
  5. 05 nsc NATS account configurations are built using the nsc tool. The NSC tool allows you to: Create and edit Oper... 10 小时前
  6. 06 Basics NSC allows you to manage identities. Identities take the form of nkeys. Nkeys are a public-key signature sy... 1 天前
  7. 07 Streams To share messages you publish with other accounts, you have to Export a Stream. Exports are associated with... 1 天前
  8. 08 Services To share services that other accounts can reach via request reply, you have to Export a Service. Services a... 1 天前
  9. 09 Signing Keys As previously discussed, NKEYs are identities, and if someone gets a hold of an account or operator nkey th... 1 天前
  10. 10 Revocation NATS supports two types of revocations. Both of these are stored in the Account JWT, so that the nats-serve... 1 天前
  11. 11 Managed Operators You can use nsc to administer multiple operators. Operators can be thought of as the owners of nats-server... 1 天前
  12. 12 nats-top nats-top is a top-like tool for monitoring nats-server servers. 提示 The nats-top functionality is now avail... 10 小时前
  13. 13 Tutorial You can use nats-top to monitor in realtime NATS server connections and message statistics. Prerequisites S... 10 小时前
  14. 14 Developing With NATS Developing with NATS involves a blend of distributed application techniques, common NATS features, and libr... 1 天前
  15. 15 Anatomy of a NATS application You can use NATS to exchange information with and make requests to other applications. You can also use NAT... 10 小时前
  16. 16 Connecting In order for a NATS client application to connect to the NATS service, and then subscribe or publish messag... 10 小时前
  17. 17 Connecting to the Default Server Some libraries also provide a special way to connect to a default url, which is generally nats://localhost... 1 天前
  18. 18 Connecting to a Specific Server The NATS client libraries can take a full URL, nats://demo.nats.io:4222, to specify a specific server host... 1 天前
  19. 19 Connecting to a Cluster When connecting to a cluster, there are a few things to think about. Passing a URL for each cluster member ... 10 小时前
  20. 20 Connection Name Connections can be assigned a name which will appear in some of the server monitoring data. This name is no... 1 天前
  21. 21 Authenticating with a User and Password For this example, start the server using: nats-server --user myname --pass password You can encrypt passwor... 10 小时前
  22. 22 Authenticating with a Token Tokens are basically random strings, much like a password, and can provide a simple authentication mechanis... 1 天前
  23. 23 Authenticating with an NKey The 2.0 version of NATS server introduces a new challenge response authentication option. This challenge re... 10 小时前
  24. 24 Authenticating with a Credentials File The 2.0 version of NATS server introduced the idea of decentralized authentication based on JSON Web Tokens... 10 小时前
  25. 25 Encrypting Connections with TLS While authentication limits which clients can connect, TLS can be used to encrypt traffic between client/se... 10 小时前
  26. 26 Setting a Connect Timeout Each library has its own, language preferred way, to pass connection options. One of the most common option... 1 天前
  27. 27 Ping/Pong Protocol NATS client applications use a PING/PONG protocol to check that there is a working connection to the NATS s... 8 小时前
  28. 28 Turning Off Echo'd Messages By default a NATS connection will echo messages if the connection also has interest in the published subjec... 8 小时前
  29. 29 Miscellaneous functionalities This section contains miscellaneous functionalities and options for connect. Get the Maximum Payload Size W... 1 天前
  30. 30 Automatic Reconnections All the client libraries maintained on the nats.io GitHub page will automatically attempt to re-connect if ... 10 小时前
  31. 31 Disabling Reconnect You can disable automatic reconnect with connection options: Go // Disable reconnect attempts nc, err := na... 1 天前
  32. 32 Set the Number of Reconnect Attempts Applications can set the maximum reconnect attempts per server. This includes the server provided to the cl... 10 小时前
  33. 33 Avoiding the Thundering Herd When a server goes down, there is a possible anti-pattern called the Thundering Herd where all of the clien... 1 天前
  34. 34 Pausing Between Reconnect Attempts It doesn’t make much sense to try to connect to the same server over and over. To prevent this sort of thra... 10 小时前
  35. 35 Listening for Reconnect Events Because reconnect is primarily under the covers, many libraries provide an event listener you can use to be... 1 天前
  36. 36 Buffering Messages During Reconnect Attempts The Core NATS client libraries try as much as possible to be fire and forget, and you should use JetStream ... 1 天前
  37. 37 Monitoring the Connection Managing the interaction with the server is primarily the job of the client library but most of the librari... 1 天前
  38. 38 Listen for Connection Events While the connection status is interesting, it is perhaps more interesting to know when the status changes.... 1 天前
  39. 39 Slow Consumers NATS is designed to move messages through the server quickly. As a result, NATS depends on the applications... 10 小时前
  40. 40 Receiving Messages In general, applications can receive messages asynchronously or synchronously. Receiving messages with NATS... 1 天前
  41. 41 Synchronous Subscriptions Synchronous subscriptions require the application to wait for messages. This type of subscription is easy t... 1 天前
  42. 42 Asynchronous Subscriptions Asynchronous subscriptions use callbacks of some form to notify an application when a message arrives. Thes... 1 天前
  43. 43 Unsubscribing The client libraries provide a means to unsubscribe a previous subscription request. This process requires ... 1 天前
  44. 44 Unsubscribing After N Messages NATS provides a special form of unsubscribe that is configured with a message count and takes effect when t... 1 天前
  45. 45 Replying to a Message Incoming messages have an optional reply-to field. If that field is set, it will contain a subject to which... 1 天前
  46. 46 Wildcard Subscriptions There is no special code to subscribe with a wildcard subject. Wildcards are a normal part of the subject n... 1 天前
  47. 47 Queue Subscriptions Subscribing to a queue group is only slightly different than subscribing to a subject alone. The applicatio... 8 小时前
  48. 48 Draining Messages Before Disconnect This feature is the ability to drain connections or subscriptions and then close the connection. Closing a ... 1 天前
  49. 49 Receiving Structured Data Client libraries may provide tools to help receive structured data, like JSON. The core traffic to the NATS... 1 天前
  50. 50 Sending Messages NATS sends and receives messages using a protocol that includes a target subject, an optional reply subject... 1 天前
  51. 51 Including a Reply Subject The optional reply-to field when publishing a message can be used on the receiving side to respond. The rep... 1 天前
  52. 52 Request-Reply Semantics The pattern of sending a message and receiving a response is encapsulated in most client libraries into a r... 1 天前
  53. 53 Caches, Flush and Ping For performance reasons, most if not all, of the client libraries will buffer outgoing data so that bigger ... 10 小时前
  54. 54 Sending Structured Data Some client libraries provide helpers to send structured data while others depend on the application to per... 1 天前
  55. 55 Building Services Recently we have agreed upon an initial specification for a services protocol so that we can add first-clas... 1 天前
  56. 56 JetStream Deciding to use streaming and higher qualities of service In modern systems, applications can expose servic... 10 小时前
  57. 57 JetStream Model Deep Dive Stream Limits, Retention, and Policy Streams store data on disk, but we cannot store all data forever, so w... 1 天前
  58. 58 Managing Streams and consumers Streams and durable consumers can be defined administratively outside the application (typically using the ... 1 天前
  59. 59 Consumer Details Consumers are how client applications get the messages stored in the streams. You can have many consumers o... 1 天前
  60. 60 Publishing to Streams Go func ExampleJetStream() { nc, err := nats.Connect("localhost") if err != nil { log.Fatal(err) } //... 1 天前
  61. 61 Using the Key/Value Store As the Key Value Store is built on top of the JetStream persistence layer you obtain a KeyValueManager obje... 1 天前
  62. 62 Using the Object Store The Object Store allows you to store data of any (i.e. large) size by implementing a chunking mechanism, al... 1 天前
  63. 63 Tutorials Tutorials are provided to give guidance on commonly used aspects of NATS. Advanced Connect and Custom Diale... 10 小时前
  64. 64 Advanced Connect and Custom Dialer in Go The Go NATS client features a CustomDialer option which allows you to customize the connection logic agains... 1 天前