Memory Usage Heatmap

import matplotlib.pyplot as plt
import numpy as np
from matplotlib.colors import LinearSegmentedColormap
from matplotlib.patches import FancyBboxPatch
import matplotlib.patheffects as pe

fig, ax = plt.subplots(figsize=(14, 7), facecolor='#ffffff')
ax.set_facecolor('#ffffff')

np.random.seed(42)
apps = ['Frontend', 'Backend', 'Database', 'Cache', 'Worker', 'Scheduler']
hours = [f'{h:02d}:00' for h in range(0, 24, 2)]
memory = np.random.gamma(3, 200, (len(apps), len(hours)))

# Modern gradient colormap
colors = ['#1e293b', '#334155', '#f59e0b', '#fbbf24', '#fef3c7']
cmap = LinearSegmentedColormap.from_list('modern', colors, N=256)

# Draw rounded rectangles for each cell
cell_width = 0.9
cell_height = 0.85
for i in range(len(apps)):
    for j in range(len(hours)):
        val = memory[i, j]
        color = cmap(val / memory.max())
        rect = FancyBboxPatch((j - cell_width/2, i - cell_height/2), 
                               cell_width, cell_height,
                               boxstyle="round,pad=0.02,rounding_size=0.15",
                               facecolor=color, edgecolor='#e2e8f0', linewidth=1)
        ax.add_patch(rect)

ax.set_xlim(-0.5, len(hours) - 0.5)
ax.set_ylim(-0.5, len(apps) - 0.5)
ax.set_aspect('equal')
ax.invert_yaxis()

ax.set_xticks(range(len(hours)))
ax.set_yticks(range(len(apps)))
ax.set_xticklabels(hours, rotation=45, ha='right', color='#64748b', fontsize=9, fontweight='500')
ax.set_yticklabels(apps, color='#1e293b', fontsize=11, fontweight='500')

# Colorbar with modern styling
sm = plt.cm.ScalarMappable(cmap=cmap, norm=plt.Normalize(vmin=0, vmax=memory.max()))
cbar = plt.colorbar(sm, ax=ax, shrink=0.8, aspect=30, pad=0.02)
cbar.set_label('Memory (MB)', color='#1e293b', fontsize=11, fontweight='500')
cbar.ax.yaxis.set_tick_params(color='#64748b')
plt.setp(plt.getp(cbar.ax.axes, 'yticklabels'), color='#64748b')
cbar.outline.set_edgecolor('#e2e8f0')

for spine in ax.spines.values():
    spine.set_visible(False)

ax.set_xlabel('Hour', fontsize=12, color='#64748b', fontweight='500', labelpad=10)
ax.set_title('Application Memory Usage', fontsize=18, color='#1e293b', fontweight='bold', pad=20,
             path_effects=[pe.withStroke(linewidth=3, foreground='#0f172a')])
ax.tick_params(length=0)

plt.tight_layout()
plt.show()