LLD machine coding basic

Author: Subham1999

.idea/encodings.xml

@@ -11,11 +11,4 @@
 
     <groupId>com.thealgorithm</groupId>
     <artifactId>data-structures</artifactId>
-
-    <properties>
-        <maven.compiler.source>21</maven.compiler.source>
-        <maven.compiler.target>21</maven.compiler.target>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    </properties>
-
 </project>

.idea/workspace.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>com.thealgorithm</groupId>
+        <artifactId>TheAlgorithm</artifactId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+
+    <groupId>com.thealgorithm</groupId>
+    <artifactId>low-level-design</artifactId>
+</project>

data-structures/pom.xml

@@ -0,0 +1,42 @@
+package com.thealgorithm.caching;
+
+import java.nio.charset.StandardCharsets;
+import java.util.Scanner;
+import java.util.StringTokenizer;
+
+/**
+ * @author: Subham Santra
+ */
+public class CachingLocalTest {
+  public static void main(String[] args) {
+    InMemoryKeyValStore keyValStore = InMemoryKeyValStore.create();
+    try (Scanner scanner = new Scanner(System.in)) {
+
+      do {
+        String line = scanner.nextLine();
+        StringTokenizer tokenizer = new StringTokenizer(line);
+
+        String var1 = tokenizer.nextToken();
+        String var2 = tokenizer.nextToken();
+        String var3 = tokenizer.hasMoreTokens() ? tokenizer.nextToken() : "";
+        String var4 = tokenizer.hasMoreTokens() ? tokenizer.nextToken() : "";
+
+        try {
+          if (var1.equalsIgnoreCase("put")) {
+            if (var4.isBlank()) {
+              keyValStore.put(var2, var3.getBytes(StandardCharsets.UTF_8), 60_000L);
+            } else {
+              keyValStore.put(var2, var3.getBytes(StandardCharsets.UTF_8), Long.parseLong(var4));
+            }
+          } else if (var1.equalsIgnoreCase("get")) {
+            System.out.println(new String(keyValStore.get(var2)));
+          } else if (var1.equalsIgnoreCase("rem")) {
+            keyValStore.rem(var2);
+          }
+        } catch (DataNotPresentException | DataExpiredException e) {
+          System.err.println(e.getMessage());
+        }
+      } while (scanner.hasNextLine());
+    }
+  }
+}

low-level-design/pom.xml

@@ -0,0 +1,10 @@
+package com.thealgorithm.caching;
+
+/**
+ * @author: Subham Santra
+ */
+public class DataExpiredException extends Exception {
+  public DataExpiredException(String s) {
+    super(s);
+  }
+}

low-level-design/src/main/java/com/thealgorithm/caching/CachingLocalTest.java

@@ -0,0 +1,10 @@
+package com.thealgorithm.caching;
+
+/**
+ * @author: Subham Santra
+ */
+public class DataNotPresentException extends Exception {
+  public DataNotPresentException(String s) {
+    super(s);
+  }
+}