I've got a few host that return an unqualified name for InetAddress.getLocalHost().getCanonicalHostName()(Documented here) e.g. "foo" instead of "foo.example.com". What could cause this and how could I fix it? Running "hostname -f" on the command line returns the FQDN and nslookup…
I have problem with my app for reading mails over IMAP. App reads multiple imap accounts. App can connect to all servers except one that require to use TLS1.2 or TLS1.3. I have this code: System.out.println("SSLContext getProtocols(): " + String.join("…
I need to open Telegram from my own Android App prepopulating both the message and recipient (and not having to choose betwenn Chrome or Telegram), I achieved the first one with this code: final String appName = "org.telegram.messenger"; Intent tIntent…
I have developed a REST end-point in Springboot that takes a String ID and responds with a ModelAndView. This end-point is marked with @Cacheable annotation. Now there are two things that can happen at the given end-point. Case 1: The…
I'm building an app using Ionic v5.2.7. When I try to run ionic cordova emulate android I get an error Requirements check failed for JDK 8 ('1.8.*')! Detected version: 11.0.5 I've been trying to install Java 8, but it's long…
Input: GCP, Kubernetes, java 11 spring boot 2 application Container is started with memory limit 1.6GB. Java application is limiting memory as well -XX:MaxRAMPercentage=80.0. Under a "heavy" (not really) load - about 1 http request per 100 ms during about…
I wrote little telegram bot based on java. Also i connected logger (log4j library) for log bot activity. After server restart cron execute bot jar-file automatically with this command: @reboot sleep 5 && java -jar /var/blablabla/praetorian19-1.0-jar-with-dependencies.jar In this case logger…
I have one table(1 cr records) in Oracle 12g which is getting updated(from other/ETL source) everyday at 4:00 AM which is my user master table. I am using this table to authenticate my user. So simple way is get it…
I am trying to configure Redisson Hibernate 2L cache in Spring MVC project. I had follow tutorials, although most of them is devoted to Spring Boot. I have added dependencies in pom.xml file: <dependency> <groupId>org.redisson</groupId> <artifactId>redisson</artifactId> <version>3.12.0</version> </dependency> <dependency> <groupId>org.redisson</groupId>…
Is there a possibility of fetching n number of keys at a time in Redis? I have more than a million keys in a Redis and I want to prepare a csv file of 100k records each. I want to…