![]() ![]() For example, How documents are stored in MongoDB is no different from how MySQL or PostgreSQL store rows. Read full a big believer that database systems share similar core fundamentals at their storage layer and understanding them allows one to compare different DBMS objectively. Discussions about scalability and performance are solely based on my opinions. Please note that the information here is derived from both the Postgres doc and code. In this video I explore the PostgreSQL process architecture in details. I have a medium post just exploring the different options. However, what part of your application does the accepting and what part does the reading and what part does the execution? You can architect your application in many ways based on your use cases. You listen on an address-port pair, connection attempts to that address and port will get added to an accept queue The application accepts connections from the queue and start reading the data stream sent on the connection. ![]() In this video I discuss how bad is this.Ĭreating a listener on the backend application that accepts connections is simple. Host key for has changed and you have requested strict checking. Please contact your system administrator.Īdd correct host key in ~/.ssh/known_hosts to get rid of this message. SHA256:uNiVztksCsDhcc0u9e8BujQXVUpKZIDTMczCvj3tD2s. The fingerprint for the RSA key sent by the remote host is It is also possible that a host key has just been changed. Someone could be eavesdropping on you right now (man-in-the-middle attack)! Perhaps not wrong - but at least different from the other clients out there that are working fine.GitHub Accidentally Exposed their SSH RSA Private key, this is the message you will get WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Putting these together tells us that the XMPP client Bamboo is using is doing something odd. Also, ejabberd is one of the main open source Jabber implementations available with one of the largest user bases of XMPP clients. This tells us that it is something particular about the XMPP client Bamboo is using. Pidgin, Exodus, and various other XMPP clients are working fine with our ejabberd 2.1.3 server. This tells us that some fix in ejabberd 2.1.0, 2.1.1, 2.1.2, or 2.1.3, possibly the one refered to above, has lead to an interop problem with the XMPP client used in Bamboo. We reverted our ejabberd installation to 2.0.5 and Bamboo is working again immediately. This particular issue was fixed in ejabberd 2.1.2. ![]() Unless clients and servers interpret the specification the same way - interop problems can exist. The quick summary of the issue is that the XMPP specification has some areas that are vague and open to interpretation. "SASL PLAIN authentication message not compliant with RFC4616".We did some research and found that ejabberd had addressed a few spec-related issues such as this in recent versions of ejabberd 2.1.3: Looking at errors through the logfile again - including errors related to gss.conf - and I came to the conclusion that the XMPP client Bamboo is using is trying to negotiate authentication that is leading to an authentication mechanism which is not supported by our ejabberd 2.1.3 server. XMPP Error encountered while attempting to send message as using, error message is: service-unavailable(503) The "Test" function returns the following error: Since upgrading our eJabberd application to 2.1.3 Bamboo has been unable to connect to the eJabberd XMPP service. ![]()
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